Temporary power box and temporary power utilization system

Abstract

The utility model relates to the technical field of temporary power utilization, in particular to a temporary power box and a temporary power utilization system, and a metering and control module, a leakage protection module and a power module are arranged in a box body; the box door is provided with a socket installation hole, and the user electricity taking socket is installed in the socket installation hole. The power supply module is electrically connected with the metering and control module and the user electricity taking socket through the electric leakage protection module; a code scanning module is further arranged on the box door, and a user can scan a code to take electricity through the code scanning module; a safety master control module is further arranged in the box body, and a user scans a code through the code scanning module and then sends a use instruction to the server through the safety master control module. The system can provide a normative power utilization channel, establish a more convenient and safer power taking point, and can provide shared power supply and code scanning power utilization service in agricultural production activities in rural areas.

Description

Technical Field

[0001] The utility model relates to the technical field of temporary electricity use, in particular to a temporary power supply box and a temporary electricity use system. Background Art

[0002] It provides more convenient and safe power supply points for vendors with temporary electricity needs. At the same time, it provides shared power supply and QR code scanning electricity services for "temporary, shared, and periodic" agricultural production activities such as irrigation, weeding, spraying, rolling, cleaning, and drying that are common in rural areas. In addition, there are no public charging piles in rural areas, which cannot meet the charging needs of new energy vehicles during rural tourism. It is urgent to design a temporary power supply to solve this problem. Utility Model Content

[0003] The purpose of the utility model is to provide a temporary power supply box, which can provide a standardized electricity supply channel, establish a more convenient and safe electricity supply point, and provide shared power supply and code scanning electricity supply services for agricultural production activities in rural areas.

[0004] Another object of the utility model is to provide a system that can provide a standardized electricity access channel, establish a more convenient and safe electricity access point, and provide shared power supply and QR code scanning electricity services for agricultural production activities in rural areas.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A temporary power supply box, comprising a box body and a box door, wherein a metering and control module, a leakage protection module and a power supply module are arranged in the box body;

[0007] The box door is provided with a socket installation hole, and the user power socket is installed in the socket installation hole;

[0008] The power supply module is electrically connected to the metering and control module and the user power socket respectively through the leakage protection module;

[0009] The box door is also provided with a code scanning module, through which the user can scan the code to draw electricity;

[0010] A safety main control module is also provided in the box, and the user scans the code through the code scanning module and then sends a use instruction to the server through the safety main control module.

[0011] Furthermore, there are multiple user power sockets, and multiple manual disconnect switches are set on the leakage protection module. The manual disconnect switches are set in a one-to-one correspondence with the user power sockets, and are used to manually control the power off of the corresponding user power sockets.

[0012] Furthermore, a mounting plate is provided at the back of the box body, and the metering and control module, the leakage protection module, the safety main control module and the power supply module are installed on the mounting plate.

[0013] Furthermore, the code scanning module uses a one-dimensional code or a two-dimensional code.

[0014] Furthermore, there are multiple one-dimensional codes or two-dimensional codes, and they are arranged in one-to-one correspondence with the user power sockets.

[0015] Furthermore, the metering and control module includes a plurality of electricity meters, which are arranged one-to-one corresponding to the user power sockets, and the electricity meters are provided with magnetic latching relays for controlling the power supply of the user power sockets, and the iron core in the magnetic latching relay is a permanent magnet.

[0016] Furthermore, the security main control module adopts a 4G encryption main control module. After the user scans the code, the 4G encryption main control module can first encrypt the plain text power data read by AES data, and then send the encrypted ciphertext data to the server through the 4G network.

[0017] Furthermore, a plurality of power indicator lights are provided on the box door, and the power indicator lights are provided in one-to-one correspondence with the user power sockets.

[0018] Furthermore, a first observation window and a second observation window are provided on the box door, and transparent materials are installed in the first observation window and the second observation window respectively, through which the power indication of the metering and control module and the switch status of the leakage protection module can be observed respectively.

[0019] A temporary power supply system comprises the temporary power supply box and a server, wherein the safety main control module is communicatively connected with the server.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The present application provides a temporary power supply box, which can not only be used for standardized temporary electricity use by night vendors in cities, but also can establish a more convenient and safe power point to address the social problem of "there are no public charging piles in rural areas, which cannot meet the charging needs of new energy vehicles during rural tourism", and can provide shared power and scan code electricity services for agricultural production activities in rural areas. When in use, the user first scans the code through the code scanning module, and then sends the use instruction to the server through the security main control module. The server then sends the meter start instruction to the metering and control module to control the meter in the metering and control module, so that the built-in magnetic latching relay of the meter is in a closed state, and then the leakage protection module is turned on to power on, so that the user can use electricity from the user's power socket.

[0022] Furthermore, through temporary power supply terminal products, temporary and repeated investment in applications can be reduced, so that the diversified agricultural production and rural tourism economic electricity needs of the majority of farmers can be met, and the high-quality development of rural revitalization can be promoted. At the same time, temporary power supplies can meet the application of diversified scenarios, greatly reduce the phenomena of private wiring, power transfer and price increases, and meet the "seasonal, mobile, and shared" electricity needs of agricultural production, agricultural irrigation, etc., which is conducive to accelerating the company's digital transformation, promoting changes in service methods, and helping power companies improve their marketing service levels. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is the appearance diagram of the temporary power supply box of the utility model;

[0025] Figure 2 This is the internal structure diagram of the temporary power supply box of the utility model after the box door is opened (the two sides are the inner structure of the box door and the inner structure of the box body respectively);

[0026] Figure 3 This is a flow chart of the temporary power supply system of the utility model.

[0027] In the figure:

[0028] 1-Box body; 2-Box door; 3-User power socket; 4-Power module;

[0029] 5-safety main control module; 6-leakage protection module; 7-metering and control module;

[0030] 8-first observation window; 9-second observation window;

[0031] 10-code scanning module; 11-power indicator light; 12-installation plate. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] 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 present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0036] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0037] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0039] Example 1

[0040] Reference Figure 1-Figure 2 This embodiment provides a temporary power supply box, including a box body 1 and a box door 2. The box door 2 is movably connected to the box body 1 to achieve opening and closing, and a circle of waterproof sealing strips is provided at the movable connection between the box door 2 and the box body 1. The box body 1 is provided with a metering and control module 7, a leakage protection module 6 and a power module 4; a socket mounting hole is provided on the box door 2, and the user power socket 3 is installed in the socket mounting hole; the power module 4 is electrically connected to the metering and control module 7 and the user power socket 3 through the leakage protection module 6. A code scanning module 10 is also provided on the box door 2, and the user can scan the code to draw electricity through the code scanning module 10; the code scanning module 10 adopts a one-dimensional code or a two-dimensional code, so that the user can scan the code when he needs to draw electricity.

[0041] A safety main control module 5 is also provided in the box body 1. The safety main control module 5 is electrically connected to the power module 4. The power module 4 supplies power to the safety main control module 5. After the user scans the code through the code scanning module 10, the user sends a usage instruction to the server through the safety main control module 5.

[0042] There are multiple user power sockets 3, and multiple manual disconnect switches are set on the leakage protection module 6. The manual disconnect switches are set in a one-to-one correspondence with the user power sockets 3, and are used to manually control the power off of the corresponding user power sockets 3. The manual disconnect switch of the leakage protection module 6 has the functions of short circuit, overcurrent overload, and leakage protection. When any of the above situations occurs during the power use process, the switch can be automatically disconnected within 0.1 seconds, playing a safety protection function to prevent high temperature fire during short circuit, damage to electrical equipment during overcurrent overload, and timely tripping to protect personal safety during leakage.

[0043] Accordingly, the metering and control module 7 includes a plurality of electric meters, which are arranged one-to-one with the user power sockets 3, and each electric meter can display the power consumption of the corresponding user power socket 3. Accordingly, a plurality of one-dimensional codes or two-dimensional codes are arranged, and are arranged one-to-one with the user power sockets 3. When any one-dimensional code or two-dimensional code is scanned, power can be drawn from the corresponding user power socket 3.

[0044] Preferably, the number of electric meters in the metering and control module 7 is three, the number of manual disconnect switches of the leakage protection module 6 is also three, the code scanning module 10 preferably uses a QR code, and three QR codes are provided, which are respectively provided below the three user power sockets 3. The box door 2 is also provided with a plurality of power indicator lights 11, specifically, three power indicator lights 11 are also provided, and the power indicator lights 11 are provided one-to-one with the user power sockets 3, and the power indicator lights 11 are correspondingly provided above the user power sockets 3, for indicating the power-on status of the user power sockets 3.

[0045] The electric meter is provided with a magnetic latching relay for controlling the power supply of the user's power socket 3. The iron core in the magnetic latching relay adopts a permanent magnet. The magnetic latching relay is an automatic switch. Like other electromagnetic relays in the prior art, it automatically connects and disconnects the circuit. It is different from other electromagnetic relays in the prior art in that the iron core in the magnetic latching relay provided in this embodiment adopts a permanent magnet. The normally closed or normally open state of the magnetic latching relay completely depends on the effect of the permanent magnet. The permanent magnet is used to maintain the attracted state of the contact piece. The switching state is switched by passing a positive direct current or a negative direct current voltage to the coil to switch the holding state. The magnetic latching relay will be permanently attracted as long as there is a positive current, and no special voltage is required. On the contrary, a reverse voltage must be added to release it to achieve switching.

[0046] The traditional magnetic latching relay is a component whose one or more output quantities produce a predetermined jump when the input quantity reaches the specified conditions. The magnetic latching relay can be simply understood as a switch that connects and disconnects the controlled circuit at its output end when a specified electrical signal is applied to the input end. The traditional magnetic latching relay is a relay that realizes the function of opening, closing or switching contacts by driving the movable part in the magnetic circuit by the electromagnetic attraction generated by the control current passing through the coil. Therefore, the magnetic latching relay provided in the present application is smaller in size and more conducive to internal integration after the improvement, and its performance is far superior to that of the traditional magnetic latching relay.

[0047] A mounting plate 12 is provided at the back of the box 1, and the metering and control module 7, the leakage protection module 6, the safety main control module 5 and the power module 4 are mounted on the mounting plate 12. Preferably, the mounting plate 12 adopts a mesh plate, which is convenient for the unified installation of various structures. After each structure is installed on the mounting plate 12, an integrated module is formed and then installed in the box 1, which is more convenient for disassembly and assembly.

[0048] The box door 2 is also provided with a first observation window 8 and a second observation window 9, wherein transparent materials are installed in the first observation window 8 and the second observation window 9, respectively, through which the power indication of the metering and control module 7 and the switch state of the leakage protection module 6 can be observed. The transparent material can be glass, transparent plastic or transparent acrylic plate.

[0049] The metering accuracy of the metering module of the metering and control module 7 meets the national Class 1 accuracy standard, with a reading accuracy of 0.01 degrees. It has a built-in high-power magnetic latching relay, and the number of reliable opening and closing times is more than 10,000 times. Due to the opening and closing state, there is no need to continuously power the magnetic latching relay, so the service life is much longer than that of ordinary magnetic latching relays. The metering module has the following functional characteristics: a large-screen LCD display, RS485 (communication protocol MODBUS-RTU and 645-2007) remote meter reading and closing functions, and can accurately measure active electric energy. The module is designed according to the national standard GB / T17215.321-2008 "Class 1 and Class 2 Static AC Active Energy Meter" and the international IEC62053-21. It is a high-tech product manufactured using advanced ultra-low power consumption large-scale integrated circuit technology and SMT technology. The key components use long-life devices of internationally renowned brands to improve the reliability and life of the product. The circuit metering part of the product adopts a dedicated metering chip, which can accurately measure active electric energy with high reliability and high precision. The product adopts a linear power supply. The metering chip converts the electric energy into pulses respectively, and the microprocessor completes the functions of electric energy collection, power calculation, electric energy pulse output, LCD display processing, etc. The data security adopts a redundant design, and the data adopts multiple backups to ensure the reliability of the metering data. The built-in magnetic latching relay is a relay that uses permanent magnets or parts with high residual magnetic characteristics to keep the armature of the electromagnetic relay in the position when the coil is energized after the coil is disconnected. According to the definition, the biggest difference between the magnetic latching relay and the general relay is that it does not need to be powered on during the period of maintaining the armature state, while other relays need to be powered on continuously. Therefore, the biggest advantage of the improved magnetic latching relay is power saving.

[0050] The security main control module 5 adopts a 4G encryption main control module or a 5G encryption main control module. Since the 5G encryption main control module uses 5G network communication in actual operation, it consumes more power. Therefore, the 4G encryption main control module is preferably used in this embodiment. After adopting the 4G encryption main control module, the 4G security encryption main control adopts AES128-ECB-PCKS5 encryption, decryption, and algorithm, and the secret key length is 128 bits for two-way data encryption and decryption processing, that is, the plaintext power data read by the 4G main control is first encrypted by AES data, and then the ciphertext data is sent to the server through the 4G network. Even if the network data is intercepted by criminals, it is difficult to crack and the real data sent by the power terminal cannot be obtained in a short time, thereby ensuring the security of data transmission. Similarly, the instructions that the server side wants to send to the terminal are also ciphertext. When the terminal receives the ciphertext instructions from the server side through the 4G network, it uses the same algorithm and the secret key negotiated by both parties to decrypt, and the decrypted plaintext instructions are used to perform corresponding opening and closing operations.

[0051] Specifically, the 4G encryption master control module is a highly integrated 4G security master control with a built-in 500Mhz high-performance MCU (single-chip microcomputer), with up to 1.36M available RAM memory and 1.34M Flash storage, which is much more powerful than ordinary MCUs. It ensures the computing performance of data encryption and decryption under multi-channel output conditions. Each instruction is encrypted and decrypted in about 15 milliseconds. The powerful computing power greatly improves the response time of terminal control compared with charging facilities on the market. In the laboratory environment, the server sends an opening and closing instruction, and the terminal returns within no more than 500 milliseconds. The user initiates an electricity use instruction from the applet, and after the payment and accounting of the server, the response is returned in an average of about 2 seconds. Its response performance far exceeds the current system of scanning code for watering the ground, as well as some intranet system versions of shared power terminals in the same industry.

[0052] The main data exchanged between the terminal and the server include: power data, voltage data, current data, user's pre-stored power data, power reading when the user starts to use electricity, opening instruction data when the user uses electricity, closing instruction data when the user ends electricity use, notification data when the user's pre-stored power is used up, alarm data when the device temperature is too high, and query result data of various terminal operating status and configuration parameters.

[0053] Power-off parameter preservation: During the power use process, after an unexpected power outage, the data is saved locally, that is, saved in the Flash storage of the 4G secure encrypted master control. Compared with products of the same category, the master control has the function of saving power-off parameters. When the terminal loses power unexpectedly, the user's pre-stored power and starting power information will be saved. When the terminal calls, the power-on machine will automatically read the parameters saved in the master control, so that users can continue to complete ongoing orders and continue to use electricity. There are two ways to check out in the event of an unexpected power outage. One is that the user opens the mini program page, can actively end the order and refund the remaining fee, and the other is that after waiting for the call, the user can continue to plug in the electrical equipment from the user's power socket 3 to continue using electricity.

[0054] Temporary power supply terminals are charged by volume and are directly connected to the State Grid (National Grid). The electricity price is calculated based on the State Grid's electricity price. For example, a two-wheeled electric vehicle costs more than 2 yuan to be fully charged using a traditional charging pile, while a State Grid's electricity terminal only costs 0.5 yuan to 1 yuan to be fully charged. Traditional charging piles will not charge by the hour, which will harm the user's electricity interests.

[0055] All charging piles on the market pay electricity bills to the power company at a centralized time. However, in this case, if the charging pile operator fails to pay the electricity bill in time, it will cause the power company to recover the electricity bill in time. If the power is cut off due to arrears, it will also affect the operation of the charging pile. In a certain electricity consumption site, only one total electricity meter (power total meter) will be installed, but one or more temporary electricity terminals will be installed under this power total meter. In this application, each power terminal has three user power sockets 3 at the same time. These three user power sockets 3 are independently measured by three metering modules (electricity meters) in the box to distinguish each user's own electricity consumption. At this time, each power socket of each power box pays the electricity bill to the electricity bill account number of a power total meter at the same time. Due to slight metering errors between metering devices, it may exist in a monthly unit that the total electricity consumption of all user power sockets 3 is not equal to the reading of the power total meter, so there will be data reconciliation. In addition, the State Grid's electricity meter is based on relevant national standards. This special meter for the State Grid can only deposit money into the meter and cannot be refunded. It cannot meet the real-time refund needs of temporary electricity users after they finish using electricity, so secondary metering and charging are required in the power box. The temporary electricity terminal of this application is connected to the power system. After each electricity use, the user can pay the electricity fee to the power system in real time, thereby effectively solving the problem of electricity fee recovery of the power company. At the same time, the charging pile operator does not have to pay the electricity fee to the power company on a regular basis, reducing the operating workload.

[0056] Electrical safety:

[0057] 1. The box body 1 of the temporary power supply box is ergonomically designed, rainproof and anti-static. The front of the box door 2 is designed with an electric quantity LCD display observation window (i.e., the first observation window 8) of the metering and control module 7, which is convenient for users to check the actual power consumption. An emergency manual disconnection window (i.e., the second observation window 9) is designed in the middle of the box door 2. When the electrical appliance catches fire accidentally, the power can be quickly cut off before safe fire extinguishing.

[0058] 2. The leakage protection module 6 is an output leakage protector, which effectively protects the user's electricity safety and avoids the safety risk of accidental electric shock to the user.

[0059] 3. The user's power socket 3 can adopt a three-hole socket, which has firm and reliable contact. The three-hole socket is also provided with an elastic protective cover, which automatically closes when there is no electricity.

[0060] Example 2

[0061] This embodiment provides a temporary power supply system, including a server and the temporary power supply box in Embodiment 1. Multiple temporary power supply boxes can be provided and distributed in various areas and places. The specific power supply steps are as follows (refer to Figure 3 ):

[0062] Step 1: State Grid companies in various cities apply for installation according to demand;

[0063] Step 2: Application completed;

[0064] Step 3: The user scans the code / selects the usage location through the map;

[0065] Step 4: Enter the temporary power applet;

[0066] Step 5: Select the power usage;

[0067] Step 6: Real-time monitoring of power consumption;

[0068] Step 7: When the user has finished using electricity, click End Power Usage;

[0069] Step 8: The meter box (i.e., the meter module in the calculation and control module) calculates the power consumption;

[0070] Step 9: The power data transmission system calculates the electricity fee;

[0071] Step 10: Deduct fees based on actual power usage;

[0072] Step 11: The meter box transmits the electricity consumption to the meter of each municipal company of the State Grid;

[0073] Step 12: End.

[0074] "Temporary power supply terminal" is a self-developed intelligent charging solution that integrates intelligent terminal Internet of Things platform, management cloud platform and mobile phone APP. It provides electricity users with special services of short-term electricity use without registration. Users can use temporary power supply terminals to solve temporary electricity needs, such as: community battery car charging piles, night market stalls, scanning code for watering, rural new energy temporary charging piles, etc. Temporary power supply terminal products break the traditional inherent power supply and use mode, and open up a new experience of electricity use with "scan and use, real-time settlement, and no registration required", solving the livelihood problem of the lack of public power points around temporary power use scenarios, and opening up a new channel for "six zeros" (0 application, 0 door-to-door, 0 procedures, 0 links, 0 investment, and 0 approval) for short-term liquidity customers.

[0075] Compared with the traditional power supply scheme that uses independent State Grid meters for each user, multiple meters for multiple households lead to increased costs, larger volume, and increased transportation and installation costs. The temporary power supply system of this application adopts the State Grid centralized power supply solution and a 100A total power meter to achieve one meter for multiple households. Reduce the size of the chassis, reduce costs, and increase efficiency. Accurate measurement, fast response, precise management, low cost, low risk, and low loss; at the same time, in terms of use, the response time of the temporary power supply after payment is less than 1 second, which is currently 2-5 minutes compared to other similar platforms.

[0076] Through temporary power supply terminal products, temporary and repeated investment in applications can be reduced, so that the diversified agricultural production and rural tourism economic electricity needs of farmers can be met, and the high-quality development of rural revitalization can be promoted. At the same time, temporary power supplies can meet the application of various scenarios, greatly reducing the phenomena of private wiring, power transfer and price increases, and meeting the "seasonal, mobile, and shared" electricity needs of agricultural production, agricultural irrigation, etc., which is conducive to accelerating the company's digital transformation, promoting changes in service methods, and helping power companies improve their marketing service levels.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

[0078] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A temporary power supply box, comprising a box body (1) and a box door (2), It is characterized in that The box (1) is provided with a metering and control module (7), a leakage protection module (6) and a power supply module (4); The box door (2) is provided with a socket installation hole, and the socket installation hole is used to install a user power socket (3); The power supply module (4) is electrically connected to the metering and control module (7) and the user power socket (3) respectively through the leakage protection module (6); The box door (2) is also provided with a code scanning module (10), and a user can scan a code to obtain electricity through the code scanning module (10); A safety main control module (5) is also provided in the box (1), and the safety main control module (5) is electrically connected to the power module (4). After a user scans a code through the code scanning module (10), the user sends a usage instruction to the server through the safety main control module (5).

2. The temporary power supply box according to claim 1, It is characterized in that The user power sockets (3) are provided with a plurality of them, and the leakage protection module (6) is provided with a plurality of manual disconnect switches, the manual disconnect switches being provided in a one-to-one correspondence with the user power sockets (3) and being used for manually controlling the disconnection of the corresponding user power sockets (3).

3. The temporary power supply box according to claim 1, It is characterized in that A mounting plate (12) is provided at the back of the box body (1), and the metering and control module (7), the leakage protection module (6), the safety main control module (5) and the power supply module (4) are mounted on the mounting plate (12).

4. The temporary power supply box according to claim 1, It is characterized in that The code scanning module (10) adopts a one-dimensional code or a two-dimensional code.

5. The temporary power supply box according to claim 4, It is characterized in that A plurality of the one-dimensional codes or the two-dimensional codes are provided, and are arranged in one-to-one correspondence with the user power sockets (3).

6. The temporary power supply box according to claim 1, It is characterized in that The metering and control module (7) comprises a plurality of electric meters, the electric meters being arranged in one-to-one correspondence with the user power sockets (3), and the electric meters being provided with magnetic latching relays for controlling the power supply of the user power sockets (3), wherein the iron core of the magnetic latching relays is a permanent magnet.

7. The temporary power supply box according to claim 1, It is characterized in that The security main control module (5) adopts a 4G encryption main control module. After the user scans the code, the 4G encryption main control module can first encrypt the plain text power data read by AES data, and then send the encrypted ciphertext data to the server through the 4G network.

8. The temporary power supply box according to claim 1, It is characterized in that The box door (2) is also provided with a plurality of power indicator lights (11), and the power indicator lights (11) are arranged in one-to-one correspondence with the user power sockets (3).

9. The temporary power supply box according to claim 1, It is characterized in that The box door (2) is also provided with a first observation window (8) and a second observation window (9), and the first observation window (8) and the second observation window (9) are respectively installed with transparent materials, and the power indication of the measuring and control module (7) and the switch state of the leakage protection module (6) can be observed through the first observation window (8) and the second observation window (9).

10. A temporary power supply system, It is characterized in that It comprises the temporary power supply box according to any one of claims 1 to 9, and also comprises a server, wherein the safety main control module (5) is communicatively connected with the server.

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