Low-voltage comprehensive distribution box convenient to overhaul and maintain and control method thereof

Abstract

The invention discloses a low-voltage comprehensive distribution box convenient to overhaul and maintain and a control method thereof, and belongs to the technical field of electric power, the low-voltage comprehensive distribution box comprises a box body and a control unit, a vertically-arranged partition plate is installed in the box body, the partition plate divides the inner space of the box body into two independent cavities, and electrical devices of the low-voltage comprehensive distribution box are installed in the first cavity; a vertically-placed storage plate is installed in the middle of the interior of the second cavity, the storage plate is slidably connected with the top and the bottom of the box body, a plurality of clamping grooves for maintenance tools are formed in the plate faces of the two sides of the storage plate, and an intelligent lock catch for blocking an opening of the corresponding clamping groove is arranged at each clamping groove; the control unit comprises a control module, a processing module, a communication module and an image acquisition module. According to the invention, the problem that the maintenance of the low-voltage comprehensive distribution box is not facilitated under the condition that the carried tools are often not matched during maintenance is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power, and relates to a low-voltage integrated distribution box which is easy to inspect and maintain, and a control method thereof. Background Art

[0002] The low-voltage integrated distribution box is an important electrical equipment in the power system. It integrates multiple functions in one and is mainly used for the distribution, control, protection and monitoring of electric energy.

[0003] The distributed components inside the low-voltage integrated distribution box are greatly affected by the fluctuation of temperature difference. Therefore, it is necessary to carry out daily maintenance on the components inside the low-voltage integrated distribution box. However, it is currently impossible to predict possible fault information in advance during the maintenance process. Therefore, when doing maintenance, it is not clear which maintenance tools are needed. As a result, in actual maintenance, the maintenance tools carried often do not match, which is not conducive to the maintenance of the low-voltage integrated distribution box. Summary of the invention

[0004] The purpose of the present invention is to provide a low-voltage integrated distribution box and a control method thereof which are easy to inspect and maintain, so as to solve the problem that it is currently impossible to predict possible fault information in advance during the inspection and maintenance process. Therefore, when doing the inspection and maintenance, it is not clear which inspection and maintenance tools are needed, resulting in the fact that the inspection and maintenance tools carried often do not match during the actual inspection and maintenance, which is not conducive to the inspection and maintenance of the low-voltage integrated distribution box.

[0005] The technical solution adopted by the present invention is as follows: A low-voltage integrated distribution box convenient for inspection and maintenance comprises a box body and a control unit. A vertically placed partition is installed inside the box body, and the partition divides the internal space of the box body into two independent chambers. The two independent chambers comprise a first chamber (11) and a second chamber (12). The first chamber (11) and the second chamber (12) are both in communication with a box door of the box body (1). The volume of the first chamber is greater than the volume of the second chamber. Electrical components of the low-voltage integrated distribution box are installed inside the first chamber. A vertically placed storage plate is installed at the middle position inside the second chamber. The storage plate is slidably connected to the top and bottom of the box body. A plurality of slots for installing inspection tools are arranged on the two side surfaces of the storage plate, and each slot is provided with an intelligent lock for blocking the slot opening. The control unit includes a control module, a processing module, a communication module, and an image acquisition module; The image acquisition module is used to acquire the image of the maintenance tool placed inside each card slot, and transmit the image of the maintenance tool to the processing module through the communication module. The processing module numbers the image of each maintenance tool and matches it to each smart lock buckle. The electronic number of the smart lock buckle is the same as the electronic number of the maintenance tool image inside the card slot. The processing module realizes the opening of each smart lock buckle through the control module; The processing module predicts the fault of the low-voltage integrated distribution box based on the temperature difference fluctuation information. After the processing module obtains the predicted fault information of the low-voltage integrated distribution box, the processing module parses the fault information to obtain the maintenance tool information required to repair the fault, and then matches the above maintenance tool information to the card slot of the corresponding maintenance tool, and then opens the smart lock of the corresponding card slot through the control module.

[0006] The present invention uses a partition to divide the internal cavity of the box into two independent cavities, one cavity is used to place the components of the low-voltage integrated distribution box, and the other cavity is used to install maintenance tools, replacing the existing mobile maintenance tool box to form a low-voltage integrated distribution box with a maintenance tool box; The present invention has multiple card slots on both side panels of the storage plate, and the shapes of the card slots are adapted to different maintenance tools. The storage plate in the present invention basically stores all commonly used maintenance tools for repairing the low-voltage integrated distribution box, and the maintenance tools stored on the storage plate include all the maintenance tools in the commonly used maintenance tool box; in order to avoid the loss of maintenance tools in the card slot, the present invention has an intelligent lock on the card slot, and the intelligent lock locks the maintenance tools in the card slot.

[0007] The opening of the smart lock of the present invention depends on the fault information predicted by the processing module, and the required maintenance tools are obtained through the fault information. The control module intelligently controls the opening of the smart lock according to the required maintenance tool information. During the maintenance process, the maintenance personnel can only take out the maintenance tools that need to be used, and the unnecessary maintenance tools cannot be taken out. On the one hand, it can avoid the loss of unnecessary maintenance tools, and on the other hand, the maintenance personnel can accurately know which maintenance tools are needed, so as to avoid the maintenance personnel not knowing which maintenance tools are needed during the maintenance process, and taking out a large number of maintenance tools, causing confusion in the use of maintenance tools; it is conducive to the use of inexperienced maintenance personnel, and solves the problem that the maintenance personnel are not clear about which maintenance tools are needed during the current maintenance, resulting in the frequent mismatch of the maintenance tools carried during the actual maintenance, which is not conducive to the maintenance and maintenance of the low-voltage integrated distribution box.

[0008] When predicting fault information, the present invention analyzes the possible faults in some components inside the low-voltage integrated distribution box through the collected temperature difference fluctuations, and then gives corresponding maintenance tool combination information according to the corresponding fault information. The control module then opens the corresponding smart lock according to the maintenance tool combination information, and the operation is simple.

[0009] Further, the smart lock comprises two bases respectively located on both sides of the card slot and on the same horizontal line, the two bases are respectively a first base and a second base, a block is installed between the first base and the second base, the backs of the first base and the second base are both connected and fixed to the storage plate, one end of the block is rotatably connected to the front of the first base, the other end of the block is electromagnetically connected to the front of the second base, a limit block is installed on the front of the second base, the limit block is close to the bottom of the second base, an electromagnet is installed on the front of the second base, the electromagnet is located above the limit block, and an iron block electromagnetically connected to the electromagnet is installed on the corresponding end of the block; the switch of the electromagnet is electrically connected to the control module; The stopper rotates around the connection point with the first base toward the side where the second base is located. When the stopper rotates to the corresponding end thereof and is placed on the limit block, the iron block on the stopper is magnetically connected to the energized electromagnet. At this time, the stopper crosses the notch of the corresponding card slot, thereby realizing the closing of the smart lock. When the processing module opens the corresponding smart lock through the control module, the control module cuts off the power to the electromagnet in the corresponding smart lock. At this time, the block is disconnected from the electromagnet, and the smart lock can be opened by manually turning the block.

[0010] Furthermore, one end of the stopper is rotatably connected to the front face of the first base via a rotating shaft, the rotating shaft is located at the center position of the front face of the first base, one end of the rotating shaft is rotatably connected to the front face of the first base via a rolling bearing, the rolling bearing is embedded in the front face of the first base, the outer ring of the rolling bearing is connected and fixed to the first base, the rotating shaft is connected and fixed to the inner ring of the rolling bearing, the other end of the rotating shaft is inserted into the stopper and the rotating shaft is fixedly connected to the stopper.

[0011] Furthermore, the storage plate is a vertically placed rectangular plate, and the top and bottom of the box body are provided with slide grooves matching the storage plate, the top and bottom of the storage plate are respectively inserted into the corresponding slide grooves and the storage plate is slidably connected to the slide grooves.

[0012] Furthermore, the image acquisition module includes a plurality of cameras, all of which are evenly distributed on both sides of the storage plate, and the cameras are connected and fixed to the inner wall of the box.

[0013] A control method for a low-voltage integrated distribution box that is easy to inspect and maintain, comprising: S1. Construct a test environment that can simulate the change of temperature difference, place the low-voltage integrated distribution box in the test environment, and perform a change test of different temperature difference values. During the test, the maximum number of cycles of the same temperature difference value is 100 times, and detect whether a fault occurs within 100 cycles; when any one of the contactors, electrical connectors, metal parts, and insulating materials in the low-voltage integrated distribution box fails for the first time, the current temperature difference value and the number of times the temperature difference value occurs are recorded as ΔTb, and the number of cycles of the temperature difference value ΔTb at this time is obtained, which is recorded as fmin; Take 7 days as the time node, obtain the temperature values ​​of multiple time periods of 24 hours every day for 7 consecutive days, and obtain the temperature of the external environment of the low-voltage integrated distribution box once every hour for 24 hours a day, for a total of 168 time points. Summarize the temperature data collected in 7 days to obtain the maximum difference among all the data. The maximum difference is the maximum temperature difference ΔTmax, and ΔTmax is greater than or equal to ΔTb. Filter out the data within the range of ΔTmax-0.5℃ from all temperature differences, and count the number of occurrences of the data within the range of ΔTmax-0.5℃, which is recorded as f; If ΔTmax is greater than or equal to ΔTb and f is greater than or equal to fmin, the processing module predicts that the low-voltage integrated distribution box needs to be repaired and predicts the fault information of the internal components of the low-voltage integrated distribution box, and the fault information includes contactor burnout, electrical connector short circuit, metal component corrosion, and insulation material leakage; If ΔTmax is less than ΔTb or f is less than fmin, the processing module predicts that the low-voltage integrated distribution box does not need maintenance; S2. Establish a database of the corresponding relationship between fault characteristics and maintenance tools in the processing module and train a machine learning model: collect historical fault data of the low-voltage integrated distribution box, including fault type, fault description, maintenance plan and maintenance tool usage record, the fault type at least includes contactor burnout, electrical connector short circuit, metal component corrosion, and insulation material leakage, and annotate the data so that each fault record has a corresponding maintenance tool combination as a label; then clean the data to remove duplicate, erroneous or incomplete data, and then establish a database of the corresponding relationship between fault characteristics and maintenance tools based on the cleaned data; Extract fault features from the historical fault data of the low-voltage integrated distribution box and train a machine learning model. The model can receive fault features as input and output the corresponding maintenance tool combination and maintenance plan. Use historical fault data and the corresponding maintenance tool combination as training data, and perform cross-validation and hyperparameter tuning to train the model: S3, the processing module uses the TextRank algorithm to perform semantic analysis and keyword extraction on the fault information of the low-voltage integrated distribution box predicted in step S1, obtains fault features through keywords, and then maps the extracted fault features into the input format required by the machine learning model, and then inputs the fault features into the machine learning model to obtain the maintenance tool combination that best matches the currently predicted low-voltage integrated distribution box fault and the maintenance plan that matches the maintenance tool combination; S4. Generate information about a maintenance tool combination based on the output results of the machine learning model, where the information about the maintenance tool combination includes the type of maintenance tool and the location number of the maintenance tool. The control module calculates the card slot that needs to be opened for the smart lock based on the maintenance tool combination information, and issues a corresponding unlocking instruction. After being unlocked, the smart lock sends a status feedback signal to the control module to confirm that the smart lock has been unlocked.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. A low-voltage integrated distribution box that is easy to inspect and maintain is provided with an inspection tool box that locks the inspection tools through an intelligent lock. A low-voltage integrated distribution box with an inspection tool box is obtained, which replaces the existing mobile inspection tool box. The maintenance personnel do not need to bring their own inspection tool box, and the maintenance work is simpler; 2. The opening of the smart lock of the present invention depends on the fault information predicted by the processing module, and then the required maintenance tools are obtained through the fault information. The control module intelligently controls the opening of the smart lock according to the required maintenance tool information. During the maintenance process, the maintenance personnel can only take out the maintenance tools they need to use, and the maintenance tools that are not needed cannot be taken out. On the one hand, it can avoid the loss of maintenance tools that are not needed. On the other hand, the maintenance personnel can accurately know which maintenance tools are needed, so as to avoid the maintenance personnel not knowing which maintenance tools are needed during the maintenance process, and taking out a large number of maintenance tools, causing confusion in the use of maintenance tools; 3. The control method of the present invention can predict possible faults of components inside the low-voltage integrated distribution box according to the fluctuation of temperature difference, and then configure corresponding maintenance tools for maintenance personnel according to the predicted faults. The configuration of maintenance tools is targeted and convenient for maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative work, among which: Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 is a schematic diagram of the second cavity structure of the present invention; Figure 3 It is a schematic diagram of the structure of the smart lock of the present invention; Figure 4 It is a schematic diagram of the first base structure of the smart lock of the present invention; Figure 5 It is a schematic diagram of the second base structure of the smart lock of the present invention.

[0016] Markings in the figure: 1-box, 2-partition, 3-storage board, 4-card slot, 5-smart lock, 11-first cavity, 12-second cavity, 13-slide, 51-first base, 52-stopper, 53-second base, 54-limiting block, 55-electromagnet, 56-rotating shaft. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0019] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0020] The features and performance of the present invention are further described in detail below in conjunction with the embodiments. Example 1

[0021] like Figure 1-5 As shown, a preferred embodiment of the present invention provides a low-voltage integrated distribution box that is easy to inspect and maintain, comprising a box body 1 and a control unit. A vertically placed partition 2 is installed inside the box body 1, and the partition 2 divides the internal space of the box body 1 into two independent chambers. The two independent chambers include a first chamber (11) and a second chamber (12). The first chamber (11) and the second chamber (12) are both connected to the box door of the box body (1). The volume of the first chamber 11 is greater than the volume of the second chamber 12. Electrical components of the low-voltage integrated distribution box are installed inside the first chamber 11. A vertically placed storage plate 3 is installed at the middle position inside the second chamber 12. The storage plate 3 is slidably connected to the top and bottom of the box body 1. A plurality of card slots 4 for installing maintenance tools are arranged on the two side panels of the storage plate 3, and each card slot 4 is provided with an intelligent lock 5 that blocks the slot 4 notch. The control unit includes a control module, a processing module, a communication module, and an image acquisition module; The image acquisition module is used to acquire the image of the maintenance tool placed inside each card slot 4, and transmit the image of the maintenance tool to the processing module through the communication module. The processing module numbers the image of each maintenance tool and matches it to each smart lock buckle 5. The electronic number of the smart lock buckle 5 is the same as the electronic number of the maintenance tool image inside the card slot 4. The processing module realizes the opening of each smart lock buckle 5 through the control module; The processing module predicts the fault of the low-voltage integrated distribution box based on the temperature difference fluctuation information. After the processing module obtains the predicted fault information of the low-voltage integrated distribution box, the processing module parses the fault information to obtain the maintenance tool information required to repair the fault, and then matches the corresponding maintenance tool card slot 4 according to the above maintenance tool information, and then opens the smart lock 5 of the corresponding card slot 4 through the control module.

[0022] The storage plate 3 is a vertically placed rectangular plate. The top and bottom of the box body 1 are provided with sliding grooves 13 matching the storage plate 3. The top and bottom of the storage plate 3 are respectively inserted into the corresponding sliding grooves 13 and the storage plate 3 is slidably connected to the sliding grooves 13.

[0023] The image acquisition module includes a plurality of cameras, all of which are evenly distributed on both sides of the storage plate 3 , and the cameras are connected and fixed to the inner wall of the box body 1 .

[0024] The control method of a low-voltage integrated distribution box that is easy to inspect and maintain comprises: S1. Construct a test environment that can simulate the change of temperature difference, place the low-voltage integrated distribution box in the test environment, and perform a change test of different temperature difference values. During the test, the maximum number of cycles of the same temperature difference value is 100 times, and detect whether a fault occurs within 100 cycles; when any one of the contactors, electrical connectors, metal parts, and insulating materials in the low-voltage integrated distribution box fails for the first time, the current temperature difference value and the number of times the temperature difference value occurs are recorded as ΔTb, and the number of cycles of the temperature difference value ΔTb at this time is obtained, which is recorded as fmin; Take 7 days as the time node, obtain the temperature values ​​of multiple time periods of 24 hours every day for 7 consecutive days, obtain the temperature of the external environment of the low-voltage integrated distribution box once every hour for 24 hours a day, a total of 168 time points, summarize the temperature data collected for 7 days respectively to obtain the maximum difference among all the data, the maximum difference is the maximum temperature difference ΔTmax, and the ΔTmax is greater than or equal to ΔTb, filter out the data falling within the range of ΔTmax-0.5°C from all the temperature differences, and count the number of occurrences of the data falling within the range of ΔTmax-0.5°C, recorded as f; in actual use, the present invention actually detects the temperature of the external environment of the low-voltage integrated distribution box every day, but uses 168 consecutive time points as maintenance points; If ΔTmax is greater than or equal to ΔTb and f is greater than or equal to fmin, the processing module predicts that the low-voltage integrated distribution box needs to be repaired and predicts the fault information of the internal components of the low-voltage integrated distribution box, and the fault information includes contactor burnout, electrical connector short circuit, metal component corrosion, and insulation material leakage; If ΔTmax is less than ΔTb or f is less than fmin, the processing module predicts that the low-voltage integrated distribution box does not need maintenance; S2. Establish a database of the corresponding relationship between fault characteristics and maintenance tools in the processing module and train a machine learning model: collect historical fault data of the low-voltage integrated distribution box, including fault type, fault description, maintenance plan and maintenance tool usage record, the fault type at least includes contactor burnout, electrical connector short circuit, metal component corrosion, and insulation material leakage, and annotate the data so that each fault record has a corresponding maintenance tool combination as a label; then clean the data to remove duplicate, erroneous or incomplete data, and then establish a database of the corresponding relationship between fault characteristics and maintenance tools based on the cleaned data; Extract fault features from the historical fault data of the low-voltage integrated distribution box and train a machine learning model. The model can receive fault features as input and output the corresponding maintenance tool combination and maintenance plan. Use historical fault data and the corresponding maintenance tool combination as training data, and perform cross-validation and hyperparameter tuning to train the model: S3, the processing module uses the TextRank algorithm to perform semantic analysis and keyword extraction on the fault information of the low-voltage integrated distribution box predicted in step S1, obtains fault features through keywords, and then maps the extracted fault features into the input format required by the machine learning model, and then inputs the fault features into the machine learning model to obtain the maintenance tool combination that best matches the currently predicted low-voltage integrated distribution box fault and the maintenance plan that matches the maintenance tool combination; S4. Generate information about the maintenance tool combination based on the output results of the machine learning model, where the information about the maintenance tool combination includes the type of maintenance tool and the location number of the maintenance tool; the control module calculates the card slot 4 that needs to be opened for the smart lock 5 based on the maintenance tool combination information, and issues a corresponding unlocking instruction. After unlocking, the smart lock sends a status feedback signal to the control module to confirm that the smart lock 5 has been unlocked.

[0025] 1. Contactor burnout inspection tools: multimeter, insulation resistance tester, screwdriver, wrench, electric pliers and cable stripping pliers.

[0026] 2. Tools for repairing short circuit of electrical connectors: multimeter, screwdriver and wrench, electric pen, insulating tape.

[0027] 3. Tools for metal parts corrosion inspection: sandpaper, wire brush and grinder, wrench and screwdriver.

[0028] 4. Tools for inspecting and repairing leakage of insulating materials: insulation resistance tester, multimeter, insulating tape and insulating sleeve, electric screwdriver or wrench.

[0029] Repeated temperature fluctuations will have adverse effects on contactors, electrical connectors, metal parts, and insulating materials in the low-voltage integrated distribution box. Therefore, before performing maintenance, the present invention first predicts fault information based on temperature fluctuations and can match maintenance tools in a targeted manner. Example 2

[0030] In this embodiment, on the basis of the embodiment 1, the smart lock buckle 5 includes two bases respectively located on both sides of the card slot 4 and on the same horizontal line, the two bases are respectively a first base 51 and a second base 53, a stopper 52 is installed between the first base 51 and the second base 53, the backs of the first base 51 and the second base 53 are both connected and fixed to the storage plate 3, one end of the stopper 52 is rotatably connected to the front of the first base 51, and the other end of the stopper 52 is electromagnetically connected to the front of the second base 53, a limit block 54 is installed on the front of the second base 53, the limit block 54 is close to the bottom of the second base 53, an electromagnet 55 is installed on the front of the second base 53, the electromagnet 55 is located above the limit block 54, and an iron block electromagnetically connected to the electromagnet 55 is installed on the corresponding end of the stopper 52; the switch of the electromagnet 55 is electrically connected to the control module; The stopper 52 rotates around the connection point with the first base 51 toward the side where the second base 53 is located. When the stopper 52 rotates to the corresponding end thereof and is placed on the limit block 54, the iron block on the stopper 52 is magnetically connected with the energized electromagnet 55. At this time, the stopper 52 crosses the notch of the corresponding card slot 4, so that the smart lock buckle 5 is closed. When the processing module opens the corresponding smart lock 5 through the control module, the control module cuts off the power to the electromagnet 55 in the corresponding smart lock 5. At this time, the block 52 is disconnected from the electromagnet 55, and the smart lock 5 can be opened by manually rotating the block.

[0031] One end of the stopper 52 is rotatably connected to the front side of the first base 51 via a rotating shaft 56. The rotating shaft 56 is located at the center of the front side of the first base 51. One end of the rotating shaft 56 is rotatably connected to the front side of the first base 51 via a rolling bearing. The rolling bearing is embedded in the front side of the first base 51. The outer ring of the rolling bearing is connected and fixed to the first base 51. The rotating shaft 56 is connected and fixed to the inner ring of the rolling bearing. The other end of the rotating shaft 56 is inserted into the stopper 52 and the rotating shaft 56 is fixedly connected to the stopper 52.

[0032] Based on Example 1, this embodiment defines the structure of the smart lock, which is electromagnetically connected through an electromagnet, is easy to operate, and is convenient for intelligent control.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made by any technician familiar with the field within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A low-voltage integrated distribution box that is easy to inspect and maintain, comprising a box body (1) and a control unit, characterized in that: A vertically placed partition (2) is installed inside the box body (1), and the partition (2) divides the internal space of the box body (1) into two independent chambers. The two independent chambers include a first chamber (11) and a second chamber (12). The first chamber (11) and the second chamber (12) are both connected to the door of the box body (1). The volume of the first chamber (11) is greater than the volume of the second chamber (12). The first chamber (11) is installed with electrical components of a low-voltage integrated distribution box. A vertically placed storage plate (3) is installed at the middle position inside the second chamber (12). The storage plate (3) is slidably connected to the top and bottom of the box body (1). A plurality of card slots (4) for installing maintenance tools are arranged on the two side panels of the storage plate (3), and each card slot (4) is provided with an intelligent lock (5) for blocking the slot (4) notch. The control unit includes a control module, a processing module, a communication module, and an image acquisition module; The image acquisition module is used to acquire an image of a maintenance tool placed inside each card slot (4), and transmit the image of the maintenance tool to the processing module through the communication module. The processing module numbers the image of each maintenance tool and matches it to each smart lock buckle (5). The electronic number of the smart lock buckle (5) is the same as the electronic number of the maintenance tool image inside the card slot (4). The processing module realizes the opening of each smart lock buckle (5) through the control module; The processing module predicts the fault of the low-voltage integrated distribution box based on the temperature difference fluctuation information. After the processing module obtains the predicted fault information of the low-voltage integrated distribution box, the processing module parses the fault information to obtain the maintenance tool information required for repairing the fault, and then matches the maintenance tool information to the corresponding card slot (4), and then opens the intelligent lock (5) of the corresponding card slot (4) through the control module.

2. A low-voltage integrated distribution box that is easy to inspect and maintain according to claim 1, characterized in that: The smart lock (5) comprises two bases respectively located on both sides of the card slot (4) and on the same horizontal line, the two bases being respectively a first base (51) and a second base (53), a stopper (52) being installed between the first base (51) and the second base (53), the backs of the first base (51) and the second base (53) being connected and fixed to the storage plate (3), one end of the stopper (52) being rotatably connected to the front of the first base (51), the other end of the stopper (52) being electromagnetically connected to the front of the second base (53), a limit block (54) being installed on the front of the second base (53), the limit block (54) being close to the bottom of the second base (53), an electromagnet (55) being installed on the front of the second base (53), the electromagnet (55) being located above the limit block (54), and an iron block electromagnetically connected to the electromagnet (55) being installed on the corresponding end of the stopper (52); the switch of the electromagnet (55) being electrically connected to the control module; The stopper (52) rotates around the connection point with the first base (51) toward the side where the second base (53) is located. When the stopper (52) rotates to the corresponding end thereof and is placed on the limit block (54), the iron block on the stopper (52) is magnetically connected to the energized electromagnet (55). At this time, the stopper (52) crosses the notch of the corresponding card slot (4), thereby realizing the closing of the intelligent lock buckle (5); When the processing module opens the corresponding smart lock (5) through the control module, the control module performs a power-off process on the electromagnet (55) in the smart lock (5), at which time the block (52) is disconnected from the electromagnet (55), and the smart lock (5) is opened by manually rotating the block.

3. A low-voltage integrated distribution box that is easy to inspect and maintain according to claim 2, characterized in that: One end of the stopper (52) is rotatably connected to the front face of the first base (51) via a rotating shaft (56); the rotating shaft (56) is located at the center of the front face of the first base (51); one end of the rotating shaft (56) is rotatably connected to the front face of the first base (51) via a rolling bearing; the rolling bearing is embedded inside the front face of the first base (51); the outer ring of the rolling bearing is fixedly connected to the first base (51); the rotating shaft (56) is fixedly connected to the inner ring of the rolling bearing; the other end of the rotating shaft (56) is inserted into the interior of the stopper (52); and the rotating shaft (56) is fixedly connected to the stopper (52).

4. A low-voltage integrated distribution box that is easy to inspect and maintain according to claim 1, characterized in that: The storage plate (3) is a vertically placed rectangular plate, and the top and bottom of the box body (1) are both provided with sliding grooves (13) matching the storage plate (3). The top and bottom of the storage plate (3) are respectively inserted into the corresponding sliding grooves (13), and the storage plate (3) is slidably connected to the sliding grooves (13).

5. The low-voltage integrated distribution box that is easy to inspect and maintain according to claim 1 is characterized in that: The image acquisition module comprises a plurality of cameras, all of which are evenly distributed on both sides of the storage plate (3), and the cameras are connected and fixed to the inner wall of the box body (1).

6. A control method for a low-voltage integrated distribution box that is easy to inspect and maintain according to any one of claims 1 to 5, characterized in that: include: S1. Construct a test environment that can simulate the change of temperature difference, place the low-voltage integrated distribution box in the test environment, and perform the change test of different temperature difference values. During the test, the maximum number of cycle tests for the same temperature difference value is 100 times, and detect whether a fault occurs within 100 cycles; When any of the contactors, electrical connectors, metal parts, and insulating materials in the low-voltage integrated distribution box fails for the first time, the current temperature difference value and the number of times the temperature difference value occurs are recorded as ΔTb, and the number of times the temperature difference value ΔTb cycles at this time is obtained, which is recorded as fmin; Take 7 days as the time node, obtain the temperature values ​​of multiple time periods of 24 hours every day for 7 consecutive days, and obtain the temperature of the external environment of the low-voltage integrated distribution box once every hour for 24 hours a day, for a total of 168 time points. Summarize the temperature data collected in 7 days to obtain the maximum difference among all the data. The maximum difference is the maximum temperature difference ΔTmax, and ΔTmax is greater than or equal to ΔTb. Filter out the data within the range of ΔTmax-0.5℃ from all temperature differences, and count the number of occurrences of the data within the range of ΔTmax-0.5℃, which is recorded as f; If ΔTmax is greater than or equal to ΔTb and f is greater than or equal to fmin, the processing module predicts that the low-voltage integrated distribution box needs to be repaired and predicts the fault information of the internal components of the low-voltage integrated distribution box, and the fault information includes contactor burnout, electrical connector short circuit, metal component corrosion, and insulation material leakage; If ΔTmax is less than ΔTb or f is less than fmin, the processing module predicts that the low-voltage integrated distribution box does not need maintenance; S2. The processing module establishes a database of the corresponding relationship between fault characteristics and maintenance tools and trains a machine learning model: collects historical fault data of the low-voltage integrated distribution box, including fault type, fault description, maintenance plan and maintenance tool usage record, wherein the fault type at least includes contactor burnout, electrical connector short circuit, metal component corrosion, and insulation material leakage, and labels the data so that each fault record has a corresponding maintenance tool combination as a label; then cleans the data to remove duplicate, erroneous or incomplete data, and then establishes a database of the corresponding relationship between fault characteristics and maintenance tools based on the cleaned data; Extract fault features from the historical fault data of the low-voltage integrated distribution box and train a machine learning model. The model can receive fault features as input and output the corresponding maintenance tool combination and maintenance plan. Use historical fault data and the corresponding maintenance tool combination as training data, and perform cross-validation and hyperparameter tuning to train the model: S3, the processing module uses the TextRank algorithm to perform semantic analysis and keyword extraction on the fault information of the low-voltage integrated distribution box predicted in step S1, obtains fault features through keywords, and then maps the extracted fault features into the input format required by the machine learning model, and then inputs the fault features into the machine learning model to obtain the maintenance tool combination that best matches the currently predicted low-voltage integrated distribution box fault and the maintenance plan that matches the maintenance tool combination; S4. Generate information about a maintenance tool combination based on the output result of the machine learning model, wherein the information about the maintenance tool combination includes the type of maintenance tool and the location number of the maintenance tool; the control module calculates the card slot (4) of the smart lock (5) that needs to be opened based on the maintenance tool combination information, and issues a corresponding unlocking instruction; after the smart lock is unlocked, it sends a status feedback signal to the control module to confirm that the smart lock (5) has been unlocked.

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