Quick access box for generator car and quick switching system for low voltage of power grid

Abstract

The invention discloses a generator car quick access box and a quick switching system for low voltage of a power grid, and relates to the technical field of power equipment.The generator car quick access box is characterized in that a generator car connection mechanism is arranged on one side face of an access box main body, and a magnetic attraction guide module is further arranged on one side face of the access box main body; the generator car connection mechanism comprises a plurality of first connector assemblies, each first connector assembly comprises a first telescopic driving part and a first connector main body, and the first connector main bodies are used for being connected with generator car connection ports in an inserted mode; and a cable connection mechanism is arranged on the other side surface of the access box main body. According to the invention, the problem of low efficiency of traditional manual alignment is solved; the structure reliability and the use safety are improved, rainwater and dust erosion is avoided, the service life is prolonged, the generator car connection mechanism and the cable connection mechanism are arranged on the two sides respectively, function division is achieved, and the mistaken touch risk of operators is reduced.

Description

Technical Field

[0001] This invention belongs to the field of low-voltage power grid technology, and particularly relates to a generator car quick access box and a quick switching system for low-voltage power grids. Background Technology

[0002] A mobile generator quick-connect box, also known as a mobile generator quick-connect cabinet, is an emergency power supply quick-connect device box manufactured according to power design requirements, utilizing existing electrical quick-connect equipment and electrical switch protection technology. In the event of a power outage due to user maintenance or a fault, the mobile generator can provide emergency power supply according to the user's need for rapid power restoration. Mobile generator quick-connect boxes are widely used in emergency repairs, disaster relief, power protection, and temporary power protection applications. Because the mobile generator quick-connect box contains various electronic components, such as air switches and fuses, these electronic components are designed to ensure the proper functioning of the mobile generator quick-connect box. However, current traditional mobile generator connection devices generally have the following technical problems: Low docking efficiency: It relies on manual visual alignment of the connectors, which takes more than 15 minutes on average. It is also prone to misalignment, which can damage the equipment and affect the emergency power supply response speed.

[0003] Insufficient protection: Fixed exposed terminals are exposed to the outdoor environment for extended periods, leading to increased contact resistance due to rainwater penetration and dust accumulation. Fault statistics show that this accounts for a significant proportion of short circuits. Although some patents employ protective enclosures, they cannot address the dynamic protection requirements during operation.

[0004] Human-computer interaction defects: Existing devices often place the cable interface and the generator car interface on the same side, resulting in crowded operating space and the risk of accidental contact.

[0005] Furthermore, older residential communities generally suffer from problems such as outdated power supply facilities, aging equipment, and insufficient capacity, making it difficult to guarantee power supply quality and posing numerous safety hazards. During emergency power supply and equipment replacement in older residential communities, to ensure safe and reliable construction operations, reduce power outage time and number of affected households, and improve power supply reliability, there is an urgent need for a low-voltage load rapid conversion device that can quickly connect, features dual power supply switching, and has one-button sequential control. Summary of the Invention

[0006] (1) Technical problem to be solved: Provide a generator car quick access box to solve the problem of low efficiency of traditional manual alignment. When it is not necessary to connect to the generator car, the first telescopic drive component drives the first connector body to retract, reducing the pollution of the first connector body by the external environment, improving the structural reliability and safety of use. The telescopic structure reduces the risk of oxidation or short circuit of the first connector body. The retractable design prevents the first connector body from being corroded by rainwater and dust when it is not working, thus extending its lifespan. The generator car connection mechanism and the cable connection mechanism are set on two separate sides to realize functional zoning and reduce the risk of accidental contact by operators. At the same time, it also provides a fast switching system for low voltage power grid. Through the low voltage grid fast switching module and the fast access module, the fast switching and safe access of low voltage loads can be realized, greatly shortening the power outage time. This solves the problem of difficult maintenance and low efficiency of existing low voltage branch boxes and realizes the fast switching and safe access of low voltage loads.

[0007] (2) The technical solution adopted in this invention is as follows: A quick access box for a generator vehicle includes a movable base and an access box body mounted on the movable base. A movable component is provided at the bottom of the movable base. A generator vehicle connection mechanism is provided on one side of the access box body. The generator vehicle connection mechanism includes a plurality of first connector assemblies. Each first connector assembly includes a first telescopic drive component and a first connector body. The first telescopic drive component is used to drive the first connector body to telescopically move back and forth. The first connector body is used to plug into the generator vehicle connection port. A cable connection mechanism is provided on the other side of the access box body for connecting to a cable.

[0008] A further technical solution is that the first connector assembly further includes a first guide rail and a first slider. The first slider is slidably disposed on the first guide rail. A plurality of first mounting slots are provided on one side of the access box body. Each of the first mounting slots corresponds to one of the first connector assemblies. The first guide rail is installed in the first mounting slot. The first connector body is installed on the first slider. The first telescopic drive component includes a first servo motor and a first transmission screw. The first transmission screw is threaded through the first slider. One end of the first transmission screw is rotatably connected to the access box body. The output end of the first servo motor is drivenly connected to the other end of the first transmission screw. The first servo motor is installed at the end of the first mounting slot. Alternatively, the first telescopic drive component includes a rodless cylinder. The output end of the rodless cylinder is connected to the first slider. The rodless cylinder is installed on one side of the first mounting slot.

[0009] A further technical solution is that the mobile base is also equipped with a lifting drive component, which is used to drive the access box body to move up and down.

[0010] A further technical solution is that the bottom of the quick access box is provided with a bottom fan heat dissipation mechanism, the inner sidewalls of the quick access box are respectively provided with graphene heat conduction plates, and the top of the quick access box is provided with a top liquid cooling heat dissipation mechanism.

[0011] A further technical solution is that the cable splicing mechanism includes a plurality of second connector assemblies, each of the second connector assemblies including a second connector body.

[0012] A further technical solution is that a magnetic guide module is also provided on one side of the main body of the access box. The magnetic guide module is used to position and magnetically connect with the magnetic plate of the docking surface of the generator vehicle. The magnetic guide module includes four neodymium iron boron magnets respectively set at the four corners of one side of the main body of the access box. A silicone rubber shock-absorbing pad is provided between the bottom of the neodymium iron boron magnet and the main body of the access box.

[0013] A fast switching system for low-voltage power grids includes a main controller, a low-voltage grid fast switching module, an intelligent control module, a remote communication module, a safety protection module, and a fast access module. The fast access module is the fast access box. The low-voltage grid fast switching module, fast access module, intelligent control module, remote communication module, and safety protection module are all electrically connected to the main controller. The low-voltage grid fast switching module is used for fast switching between the mains power supply and the generator power supply. The fast access module is used for fast connection to generator equipment. The intelligent control module includes a sensing module, a control module, and a display module. The sensing module is used to monitor the three-phase input current and voltage. The control module is used for manual and automatic operation control. The display module is used to display the three-phase current and voltage values, the main switch status, and the fast switching system operating status information. The safety protection module includes an incoming line grounding switch for grounding during maintenance and replacement. The remote communication module is used to communicate between the fast switching system and a remote monitoring center, upload the fast switching system status information, and receive remote control commands.

[0014] A further technical solution is that the safety protection module also includes an arc protection system, which includes a high-speed arc extinguishing device and an arc light sensor installed at the switch contacts of the double-headed double-throw switch. When an arc occurs, the arc light sensor senses the arc light signal and converts it into an electrical signal for transmission. Upon receiving the signal from the arc light sensor, the high-speed arc extinguishing device is immediately activated. The high-speed arc extinguishing device has a built-in fast-acting actuator to complete the detection and physical isolation of the fault arc. The high-speed arc extinguishing device extinguishes the arc by cutting off the arc path or activating a specific arc extinguishing medium.

[0015] A further technical solution involves the enclosure being equipped with an intelligent identification module electrically connected to the main controller. This module includes an RFID reader and a visual positioning camera. The RFID reader identifies the generator model, and the visual positioning camera identifies the location of the generator's interface. A passive electronic tag is attached to the generator's mating surface, storing model codes and interface parameters. When the generator approaches within a 3-meter range, the RFID reader automatically activates, and the visual positioning camera identifies the positioning target on the generator's mating surface, guiding the external generator to quickly connect to the enclosure.

[0016] A further technical solution is that the low-voltage grid fast switching module is a double-headed double-throw switch.

[0017] (3) Due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. This application has a novel structure and ingenious design. When docking with the generator car is required, the moving component drives the generator car to move quickly to the docking surface of the generator car. The magnetic guide module generates a strong adsorption force to achieve rapid and accurate positioning docking with the docking surface of the generator car. Through the magnetic adsorption between the magnetic guide module and the magnetic plate of the generator car, millimeter-level accurate positioning docking is achieved, which solves the problem of low efficiency of traditional manual alignment. 2. When the main body of the access box needs to be connected to the generator vehicle, the first telescopic drive component in the corresponding first connector assembly drives the first connector body to extend and insert into the generator vehicle connection port to achieve contact and conduction. The second connector assembly is located on the other side of the main body of the access box, making it convenient for operators to connect the cable to the second connector assembly. Under the above configuration, when it is not necessary to connect to the generator vehicle, the first telescopic drive component drives the first connector body to retract, reducing the pollution of the first connector body by the external environment, improving structural reliability and safety of use. The telescopic structure also reduces the risk of oxidation or short circuit of the first connector body. The retractable design prevents the first connector body from being corroded by rainwater and dust when not in operation, thus extending its lifespan. The generator vehicle connection mechanism and the cable connection mechanism are located on opposite sides, realizing functional zoning, simplifying the operation process. The separate connection surface design ensures that the cable connection and the generator vehicle docking do not interfere with each other, reducing the risk of accidental contact by operators.

[0018] 3. This invention is ingeniously designed, achieving rapid switching and safe access of low-voltage loads through a low-voltage grid rapid switching module and a rapid access module, greatly shortening power outage time; the intelligent control module integrates sensing, control, and display functions, providing real-time monitoring and an intuitive operation interface, improving the intelligence level of this application embodiment; the safety protection module ensures personal safety during maintenance and replacement, enhancing the safety of the device; the remote communication module enables remote monitoring and control, realizing communication between the device and the remote monitoring center, improving operation and maintenance efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a generator vehicle quick access box according to the present invention; Figure 2 This is a schematic diagram of a fast switching system for low-voltage power grids according to the present invention.

[0020] Figure 3 This is a partial structural diagram of the fast access module of the present invention.

[0021] Figure 4 This is a schematic diagram illustrating the working principle of the low-voltage grid fast switching module of the present invention.

[0022] Figure label: 1. Movable base; 2. Connector box body; 3. First connector body; 4. First telescopic drive component; 5. Neodymium iron boron magnet; 6. First guide rail; 7. First slider; 8. First mounting slot; 9. Lifting drive component; 10. Bottom fan cooling mechanism; 11. Top liquid cooling mechanism; 12. Steering base plate; 13. Steering mechanism; 14. Drive shaft; 15. Driven shaft; 16. Drive wheel; 17. Driven wheel; 18. Second connector body; 19. Second guide rail; 20. Second slider; 21. Second mounting slot; 22. Second telescopic drive component; 23. Limiting ring; 24. Annular limiting groove; 25. Guide post. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] like Figures 1-4 As shown.

[0025] Example 1: In the embodiments of this application, such as Figure 1As shown, a generator vehicle quick access box includes a movable base 1 and an access box body 2 mounted on the movable base 1. A generator vehicle docking mechanism is provided on one side of the access box body 2. The generator vehicle docking mechanism includes multiple first connector assemblies, which can be arranged in an array. Each first connector assembly includes a first telescopic drive component 4 and a first connector body 3. The first telescopic drive component 4 is used to drive the first connector body 3 to telescopically move back and forth. The first connector body 3 is used to connect with the generator vehicle docking port. A cable connection mechanism is provided on the other side of the access box body 2. The cable connection mechanism includes multiple second connector assemblies, each of which includes a second connector body 18 for connecting with cables. Specifically, in this embodiment, when docking with a generator vehicle is required, the moving component drives the generator vehicle access box to move quickly to the docking surface of the generator vehicle. A strong magnetic attraction force is generated by the magnetic guide module to achieve rapid and precise positioning and docking at the generator vehicle's docking surface. Millimeter-level precise positioning and docking are achieved through the magnetic attraction between the magnetic guide module and the generator vehicle's magnetic guide plate, solving the problem of low efficiency in traditional manual alignment. When the access box body 2 needs to dock with the generator vehicle, after the magnetic guide module is positioned at the docking surface of the generator vehicle, the first telescopic drive component 4 in the corresponding first connector assembly drives the first connector body 3 to extend and insert into the generator vehicle docking port to achieve contact and conduction. The second connector assembly... On the other side of the main body 2 of the access box, it is convenient for operators to connect the cable to the second connector assembly. Under the above configuration, when it is not necessary to connect to the generator vehicle, the first telescopic drive component 4 drives the first connector body 3 to retract, reducing the pollution of the first connector body 3 by the external environment, improving structural reliability and safety of use. The telescopic structure also reduces the risk of oxidation or short circuit of the first connector body 3. The retractable design prevents the first connector body 3 from being corroded by rainwater and dust when it is not in operation, thus extending its lifespan. The generator vehicle connection mechanism and the cable connection mechanism are located on opposite sides, realizing functional zoning, simplifying the operation process. The separate connection surface design ensures that the cable connection and the generator vehicle docking do not interfere with each other, reducing the risk of accidental contact by operators.

[0026] In this embodiment, the first connector assembly further includes a first guide rail 6 and a first slider 7. The first slider 7 is slidably disposed on the first guide rail 6. A plurality of first mounting slots 8 are provided on one side of the access box body 2. Each first mounting slot 8 corresponds to a first connector assembly. The first guide rail 6 is installed in the first mounting slot 8, and the first connector body 3 is installed on the first slider 7. The first telescopic drive component 4 includes a first servo motor and a first transmission screw. The first transmission screw is threaded through the first slider 7. One end of the first transmission screw is rotatably connected to the access box body 2. The output end of the first servo motor is drivenly connected to the other end of the first transmission screw. The first servo motor is installed at the end of the first mounting slot 8. Specifically, in this embodiment, a first servo motor drives a first transmission screw to rotate. The rotational motion is converted into linear motion by the threaded engagement between the first transmission screw and the first slider 7, achieving millimeter-level precise extension and retraction of the first connector body 3. This allows the first connector body 3 to extend out of and retract into the first mounting slot 8. The first mounting slot 8 is designed to correspond one-to-one with the connector components, enabling each unit to operate independently without interference, thus improving system fault tolerance. The sliding engagement between the first guide rail 6 and the first slider 7 constrains the motion trajectory, preventing the connector body from deflecting or vibrating during extension and retraction. Furthermore, maintenance is convenient; the modular mounting slot design supports quick replacement of individual connector components, shortening maintenance time and improving maintenance efficiency. The above configuration integrates precision transmission and modular concepts, significantly improving the stability and maintainability of the connection system.

[0027] In this embodiment, the second connector body 18 is a wire clamp. The second connector assembly also includes a second telescopic drive component 22, a second guide rail 19, and a second slider 20. The second slider 20 is slidably mounted on the second guide rail 19. Multiple second mounting slots 21 are provided on the other side of the access box body 2, each corresponding to a different second connector assembly. The second guide rail 19 is installed within the second mounting slot 21, and the second connector body 18 is mounted on the second slider 20. The second telescopic drive component 22 includes a second servo motor and a second transmission screw. The second transmission screw is threaded through the second slider 20, with one end rotatably connected to the access box body 2. The output end of the second servo motor is driven by the other end of the second transmission screw. The second servo motor is mounted at the end of the second mounting slot 21. Specifically, this configuration drives the second connector body 18 to extend out of and retract into the second mounting slot 21, thus reducing external environmental pollution and extending its service life.

[0028] The first connector body 3 and the second connector body 18 are arranged in a one-to-one correspondence. Inside the access box body 2, the connection between the first connector body 3 and the second connector body 18 is achieved through the connection of wires and copper busbars.

[0029] In this embodiment, the main controller is also electrically connected to the first servo motor and the second servo motor respectively. The main controller is also equipped with a wireless module for connecting to a smart terminal, so that operators can control and use the various components of this embodiment on the smart terminal. Of course, the main body 2 of the access box can also be equipped with corresponding control buttons to control and use the various components.

[0030] In this embodiment, the mobile base 1 is further equipped with a lifting drive component 9, which is used to drive the access box body 2 to move up and down. Specifically, the lifting drive component 9 is a servo motor and lead screw combination structure. The mobile base 1 is also provided with several guide posts 25, which slide through the access box body 2. With the above configuration, the access box body 2 can be driven to move up and down to adapt to different generator car connection heights and improve the flexibility of use.

[0031] Example 2: A magnetic guide module is also provided on one side of the access box body 2. The magnetic guide module is used for positioning and magnetic docking with the magnetic plate (such as low carbon steel or silicon steel) of the generator docking surface. In this example, the magnetic guide module includes four neodymium iron boron magnets 5, which are respectively set at the four corners of one side of the access box body 2. Specifically, in this setting, it consists of four neodymium iron boron magnets 5, which are respectively set at the four corners of one side of the access box body 2 to position and magnetically dock with the magnetic plate of the generator docking surface. The high magnetic energy product of the neodymium iron boron magnets 5 generates a strong attraction force, realizing fast and accurate positioning and docking.

[0032] In this embodiment, a silicone rubber shock-absorbing pad is provided between the bottom of the neodymium iron boron magnet 5 and the main body 2 of the access box.

[0033] In this embodiment, copper windings (1.2mm wire diameter, 150 turns) are further arranged around the periphery of the neodymium iron boron magnet, and the compensating magnetic field strength is adjusted by a PID controller; control principle: F mag = (B 2 A) / 2μ0+ kI 1.5 ; Where A is the effective area of ​​the magnetic pole (unit: m²), which determines the range of the magnetic field; μ0 is the vacuum permeability, used to quantify the magnetic energy conversion efficiency; B is the remanent magnetic induction (1.45T), which characterizes the inherent magnetic properties of the material; I represents the compensation current (0-20A). The compensation current (0–20 A) flowing through the copper winding is dynamically adjusted by the PID controller. k is the magnetic circuit structure coefficient; The PID dynamic compensation mechanism in this application embodiment: The displacement sensor detects the change in distance between the magnet and the magnetic plate, generating an error signal e(t) in real time; the PID controller outputs a current command. The required compensation current I is calculated in reverse according to the formula to offset the magnetic fluctuations caused by the change in distance; The electromagnetic-permanent magnet coupling design in this application embodiment includes: copper winding parameters (wire diameter 1.2 mm, 150 turns): low resistance winding (reducing Joule heating); high number of turns increases ampere-turns (NI), enhancing the controllable magnetic field strength; neodymium iron boron magnet: provides high steady-state magnetic force (B=1.45T), reducing compensation current energy consumption; This application's embodiments achieve improved magnetic stability, with the compensation current suppressing the magnetic attenuation of the permanent magnet as distance increases (when the distance doubles, the basic magnetic force decreases to 1 / 4, and the compensation term can compensate for 70% of the loss); magnetic fluctuations during the docking process are controlled within ±5% (compared to ±30% fluctuations in traditional pure permanent magnet solutions); response speed is optimized: PID control makes the magnetic adjustment response time <50 ms (meeting the dynamic docking requirements of the generator car); current exponential compensation significantly reduces control delay caused by magnetic saturation; this application's embodiments dynamically adjust the compensation current of the copper windings around the NdFeB magnet using a PID controller, which can offset magnetic fluctuations caused by changes in the distance between the magnet and the magnetic guide plate. Formula F mag = (B 2 A) / 2μ0+ kI 1.5 In this process, the adjustment of the compensation current I keeps the magnetic fluctuation within ±5%, achieving millimeter-level precise positioning. The stable magnetic attraction reduces mechanical vibration and misalignment friction during generator car docking, thereby reducing physical wear of interface components and extending the service life of the generator car docking port. Furthermore, the fast response (<50ms) of PID control avoids mechanical impact caused by sudden changes in magnetic force. The displacement sensor detects the spacing change in real time and dynamically adjusts the current through the error signal e(t) to prevent damage to the generator car interface circuit due to instantaneous overload during docking.

[0034] The embodiments of this application achieve improved energy efficiency: a compensation current of 20 A can increase the magnetic force by 40% (compared to 35 A required for the linear model); the temperature rise of the copper winding is controlled below 45°C, and the low energy consumption reduces the heat generation of the copper winding (temperature rise < 45°C), which indirectly reduces the load on the generator cooling system and is conducive to its long-term stable operation.

[0035] In this embodiment, the magnetic plate (such as low-carbon steel or silicon steel) on the docking surface of the generator car can enhance the magnetic adsorption efficiency and reduce docking energy consumption; the magnetic permeability of the magnetic plate is hundreds of times that of the vacuum magnetic permeability, which can improve the magnetic field conversion efficiency, while ordinary metal plates will weaken this effect.

[0036] Example 3: Based on Example 1, a bottom fan cooling mechanism 10 is provided at the bottom of the quick access box, graphene heat-conducting plates are respectively provided on the inner side walls of the quick access box, and a top liquid cooling mechanism 11 is provided at the top of the quick access box. Specifically, the bottom fan cooling mechanism 10 includes two axial flow fans arranged in parallel, which use axial flow fans and steplessly adjust the speed through PWM signals to achieve active heat dissipation; the inner side walls of the quick access box are made of graphene heat-conducting plates, which are set on the inner side walls of the access box, and utilize the high thermal conductivity of graphene to achieve rapid temperature uniformity; the top liquid cooling mechanism is a design of micro water pump, liquid cooling pipeline and aluminum cooling plate in the prior art, which removes heat through coolant circulation to achieve efficient heat dissipation; the feature of this embodiment is that the axial flow fans at the bottom, the graphene heat-conducting plates on the side walls and the liquid cooling pipelines at the top work together to achieve three-dimensional heat dissipation, which significantly improves the heat dissipation efficiency of the system, and controls the continuous operating temperature below 65°C to ensure stable operation of the equipment.

[0037] In this embodiment, a moving assembly is provided at the bottom of the movable base 1. The moving assembly includes a steering base plate 12, a steering mechanism 13, a moving drive component (conventional technology, not shown in the figure), a drive shaft 14, a driven shaft 15, two driving wheels 16 respectively connected to both ends of the drive shaft 14, and two driven wheels 17 respectively connected to both ends of the driven shaft 15. The steering mechanism 13 is installed at the bottom of the movable base 1, the steering base plate 12 is rotatably disposed at the lower end of the movable base 1, and the steering mechanism 13 is used to drive the steering base plate 12 to rotate. The drive shaft 14 is rotatably disposed at one end of the steering base plate 12, the moving drive component is installed on the steering base plate 12, and the moving drive component is used to drive the drive shaft 14 to rotate. The driven shaft 15 is rotatably disposed at the other end of the steering base plate 12. A limit ring 23 is provided on the upper end surface of the steering base plate 12, and an annular limit groove 24 is provided on the lower end surface of the movable base 1 to slide and cooperate with the limit ring 23. Specifically, the steering mechanism 13 can be a stepper motor, which drives the steering base plate 12 to rotate so as to realize the orientation steering of the generator car access box; the moving drive component includes a stepper motor and a reducer connected to the output end of the stepper motor, and the output end of the reducer is driven to drive the drive shaft 14; under the above configuration, the generator car access box can be moved in all directions to facilitate docking with the generator car.

[0038] Example 4: Based on Example 1, in this embodiment, the access box body 2 is further equipped with a main controller and an intelligent identification module. The intelligent identification module includes an RFID reader / writer and a visual positioning camera. The RFID reader / writer is used to identify the generator vehicle model, and the visual positioning camera is used to identify the matching interface position of the generator vehicle. The RFID reader / writer, the visual positioning camera, the first telescopic drive component 4, and the moving component are electrically connected to the main controller. Specifically, a passive electronic tag is attached to the generator docking surface, which stores the vehicle model code and interface parameters. When the device approaches the generator vehicle within 3 meters, the RFID reader / writer is automatically activated, and the visual positioning camera is used to identify the positioning target set on the generator vehicle docking surface (the positioning target can be a high-contrast coded mark set on the generator vehicle docking surface with a reflectivity >90%). The visual positioning camera guides the rapid access box to connect to the generator vehicle.

[0039] Example 5: Based on Example 1, the difference is that the first telescopic drive component 4 includes a rodless cylinder. The output end of the rodless cylinder is connected to the first slider 7, and the rodless cylinder is installed on one side of the first mounting groove 8. Specifically, the moving accuracy of the rodless cylinder is not as good as the cooperation between the servo motor and the transmission screw in Example 1, but it can still drive the first slider 7 to move back and forth to drive the telescopic movement of the first connector body 3.

[0040] Example 6: As Figures 2 to 4 As shown, a fast switching system for low-voltage power grids includes a main controller, a low-voltage grid fast switching module, an intelligent control module, a remote communication module, a safety protection module, and a fast access module. The fast access module is the fast access box of Embodiment 1. The low-voltage grid fast switching module, fast access module, intelligent control module, remote communication module, and safety protection module are electrically connected to the main controller. The low-voltage grid fast switching module is used for fast switching between the mains power supply line and the generator power supply line. The fast access module is used for fast connection to generator equipment. The intelligent control module includes a sensing module. The system comprises a control module (with a human-machine interface) and a display module. The sensing module monitors the three-phase input current and voltage; the control module handles manual and automatic operation; and the display module displays the three-phase current and voltage values, the main switch status, and the operating status information of the fast switching system. The safety protection module includes an incoming-side grounding switch for grounding during maintenance and replacement. The remote communication module facilitates communication between the fast switching system and a remote monitoring center, uploads fast switching system status information, and receives remote control commands. The low-voltage grid fast switching module is a double-ended double-throw switch.

[0041] Specifically, the embodiments of this application are ingeniously designed, achieving rapid switching and safe access of low-voltage loads through a low-voltage grid rapid switching module and a rapid access module, greatly shortening power outage time; the intelligent control module integrates sensing, control, and display functions, providing real-time monitoring and an intuitive operation interface, improving the intelligence level of the embodiments of this application; the safety protection module ensures personal safety during maintenance and replacement, enhancing the safety of the device; the remote communication module enables remote monitoring and control, realizing communication between the device and the remote monitoring center, improving operation and maintenance efficiency.

[0042] In this embodiment, the grounding switch on the incoming side of the safety protection module is a three-pole linkage grounding switch with a rated short-time withstand current of 25kA / 1s. Furthermore, the safety protection module also includes a grounding resistor, which works in conjunction with the main controller and the intelligent control module to achieve online monitoring. When the grounding resistance is >4Ω, an automatic alarm is triggered (a buzzer electrically connected to the main controller is also installed on the housing 1).

[0043] In this embodiment, the safety protection module further includes an arc protection system. The arc protection system includes a high-speed arc extinguishing device and an arc light sensor installed at the switch contacts of the double-ended double-throw switch. The arc light sensor can detect and isolate the fault arc within 5ms. The arc light sensor is located at or near the switch contacts of the double-ended double-throw switch to ensure rapid detection when an arc is generated. Its response time is extremely short, usually less than 1 millisecond, and it can capture the generation of arc light almost in real time. When an arc occurs, it is accompanied by strong arc light. The arc light sensor senses this arc light signal through a highly sensitive photoelectric element and converts it into an electrical signal for transmission. After receiving the signal from the arc light sensor, the high-speed arc extinguishing device is immediately activated. The high-speed arc extinguishing device has a built-in fast-acting actuator that can complete the detection and physical isolation of the fault arc in a very short time (usually within 5 milliseconds). The high-speed arc extinguishing device effectively extinguishes the arc by quickly cutting off the arc path or activating a specific arc extinguishing medium (such as gas or vacuum), preventing it from continuing to burn and expanding the fault range.

[0044] In this embodiment, the main controller is also electrically connected to the control switches of the first servo motor and the second servo motor respectively. The main controller communicates with the intelligent terminal / remote monitoring center through the remote communication module, which facilitates the operator to control and use the various components of this embodiment on the intelligent terminal / remote monitoring center. Of course, a control module is also provided on the housing 1. The control module is equipped with corresponding control buttons to facilitate the control and use of various components.

[0045] The above are merely preferred embodiments of the present invention.

Claims

1. A quick-connect box for a generator vehicle, characterized in that, The device includes an access box body, one side of which is provided with a generator vehicle connection mechanism. The generator vehicle connection mechanism includes multiple first connector assemblies. Each first connector assembly includes a first telescopic drive component and a first connector body. The first telescopic drive component is used to drive the first connector body to telescopically move. The first connector body is used to plug into the generator vehicle connection port. The other side of the access box body is provided with a cable connection mechanism for connecting to cables.

2. The generator car quick-connect box according to claim 1, characterized in that, The first connector assembly includes a first guide rail and a first slider. The first slider is slidably disposed on the first guide rail. A plurality of first mounting slots are provided on one side of the access box body. Each of the first mounting slots corresponds to one of the first connector assemblies. The first guide rail is installed in the first mounting slot. The first connector body is installed on the first slider. The first telescopic drive component includes a first servo motor and a first transmission screw. The first transmission screw is threaded through the first slider. One end of the first transmission screw is rotatably connected to the access box body. The output end of the first servo motor is drivenly connected to the other end of the first transmission screw. The first servo motor is installed at the end of the first mounting slot. Alternatively, the first telescopic drive component includes a rodless cylinder. The output end of the rodless cylinder is connected to the first slider. The rodless cylinder is installed on one side of the first mounting slot.

3. The generator car quick-connect box according to claim 1, characterized in that, The mobile base is also equipped with a lifting drive component, which is used to drive the main body of the access box to move up and down.

4. The generator car quick-connect box according to claim 1, characterized in that, The bottom of the quick access box is equipped with a bottom fan heat dissipation mechanism, the inner sidewalls of the quick access box are respectively equipped with graphene heat conduction plates, and the top of the quick access box is equipped with a top liquid cooling heat dissipation mechanism.

5. A quick-connect box for a generator vehicle according to claim 1, characterized in that, The cable splicing mechanism includes a plurality of second connector assemblies, each of which includes a second connector body for connecting to a cable.

6. A quick-connect box for a generator vehicle according to claim 1, characterized in that, A magnetic guide module is also provided on one side of the main body of the access box. The magnetic guide module is used to position and magnetically connect with the magnetic plate of the docking surface of the generator vehicle. The magnetic guide module includes four neodymium iron boron magnets respectively located at the four corners of one side of the main body of the access box. A silicone rubber shock-absorbing pad is provided between the bottom of the neodymium iron boron magnet and the main body of the access box. The magnetic guide module includes twelve groups of neodymium iron boron magnets arranged in a ring array.

7. A fast switching system for low-voltage power grids, characterized in that, It includes a main controller, a low-voltage grid fast switching module, an intelligent control module, a remote communication module, a safety protection module, and a fast access module. The fast access module is the fast access box as described in any one of claims 1-6. The low-voltage grid fast switching module, the fast access module, the intelligent control module, the remote communication module, and the safety protection module are electrically connected to the main controller. The low-voltage grid fast switching module is used for fast switching between the mains-side incoming line and the generator-side incoming line; the fast access module is used for fast connection to the generator equipment; the intelligent control module includes a sensing module, a control module, and a display module, wherein the sensing module is used to monitor the three-phase input current and voltage, the control module is used for manual and automatic operation control, and the display module is used to display the three-phase current and voltage values, the main switch status, and the fast switching system operating status information; the safety protection module includes an incoming-side grounding switch for grounding during maintenance and replacement; the remote communication module is used to communicate between the fast switching system and the remote monitoring center, upload the fast switching system status information, and receive remote control commands.

8. A quick-connect box for a generator vehicle according to claim 7, characterized in that, The safety protection module also includes an arc protection system.

9. A quick-connect box for a generator vehicle according to claim 7, characterized in that, The enclosure is also equipped with an intelligent identification module electrically connected to the main controller. The intelligent identification module includes an RFID reader and a visual positioning camera. The RFID reader is used to identify the model of the power generation equipment, and the visual positioning camera is used to identify the location of the matching interface of the power generation equipment. A passive electronic tag is attached to the docking surface of the power generation equipment, which stores the model code and interface parameters. When the power generation equipment approaches within a 3-meter range, the RFID reader is automatically activated, and the visual positioning camera is used to identify the positioning target set on the docking surface of the power generation equipment. The visual positioning camera guides the external power generation equipment to quickly connect to the enclosure.

10. A quick-connect box for a generator vehicle according to claim 7, characterized in that, The low-voltage grid fast switching module is a double-headed double-throw switch.

Images