CN108075372B

CN108075372B - Mobile solar three-stage terminal box

Info

Publication number: CN108075372B
Application number: CN201711290289.5A
Authority: CN
Inventors: 余建文; 黄小杰; 李滪柳; 曾广实; 磨其宁; 朱能盈; 陈国贤; 唐蕾红; 申哲敏; 符春鲜; 陈麒安; 覃承聚; 黄国旗
Original assignee: Nanning Gaozhao Electrical Appliance Co ltd; Liuzhou Power Supply Bureau of Guangxi Power Grid Co Ltd
Current assignee: Nanning Gaozhao Electrical Appliance Co ltd; Liuzhou Power Supply Bureau of Guangxi Power Grid Co Ltd
Priority date: 2017-12-08
Filing date: 2017-12-08
Publication date: 2020-06-02
Anticipated expiration: 2037-12-08
Also published as: CN108075372A

Abstract

The invention discloses a movable solar three-stage terminal box which comprises a supporting foot frame, a box body, a cover body and a door body, wherein the cover body is fixedly covered at the top end of the box body, one edge of a door frame of the box body is movably installed in a hinged mode with one side edge of the door body, the other side edge of the door body is connected with the other edge of the door frame of the box body through a door lock when the door body is closed, solar cell panels are respectively arranged above the cover body or on two sides and the rear side of the cover body, a rotating table used for fixing the bottom end of the box body is arranged at the top end of the supporting foot frame, an L-shaped step used for accommodating and fixing the bottom end of the box body is arranged in the rotating table, a solar control unit, a wiring unit and a storage battery are arranged in the box body from top to bottom. The solar three-stage terminal box is convenient to move and safe to use, and can meet the requirements of solar output power, outdoor power utilization and power distribution.

Description

Mobile solar three-stage terminal box

Technical Field

The invention belongs to the technical field of solar energy and distribution boxes, and particularly relates to a movable solar energy three-stage terminal box.

Background

In recent years, with the rapid development of solar grid-connected power generation and urban distribution networks, newly-increased electric equipment is continuously increased, and the electric equipment not only needs to have a high electrical interface function, but also needs to have safety and stability, so that the requirement on a distribution box is higher. The block terminal is the necessary power control equipment in people's family, and its main function is the device that is used for concentrating installation switch and instrument electrical equipment, is the low pressure distribution solution who is very welcome at present, and the block terminal can be divided into the tertiary according to the difference of its usage and function: the main distribution box (also called a fixed distribution box), the distribution box (also called a movable distribution box) and the switch box are specifically provided for the configuration in each level of distribution boxes according to the basic technical requirements of a construction power utilization three-level distribution system and the temporary power utilization specification of a construction site-JGJ 46-2005 technical requirements, the three-level distribution box needs to be protected step by step to achieve the overall requirements of one machine, one brake, one leakage, one box and one lock, the main distribution box is a one-level distribution box, is a centralized point for controlling all power supply of a construction site, and is required to be arranged in a place close to a power supply, and the distribution box is required to be arranged in an area with relatively concentrated power utilization equipment or loads; the distribution box is a secondary distribution box, also called a branch box, is a branch of the total distribution box, controls an electricity utilization centralized point in a certain range of a construction site, and is arranged at a place where the electric equipment accords with relative concentration; the switch box is a three-level distribution box and only can be responsible for one device, one switching device is strictly forbidden to directly control two or more electric devices, so called 'one machine, one brake, one leakage, one box and one lock' is specific to the switch box, the distance between the distribution box and the switch box is not more than 30m, and the horizontal distance between the switch box and the fixed electric devices controlled by the switch box is not more than 3 m.

The solar terminal box is used as a device for controlling all outdoor power control, namely a three-stage distribution box based on solar energy, becomes a necessary power control device, and has the problems of inconvenient installation and adjustment, unstable electric energy output by a solar panel, difficult wiring and unreasonable power control distribution. The terminal box that present job site used temporarily does not have unified technical configuration, and removes inconveniently, does not set up short circuit, transship and earth leakage protection function, takes place to electrocute easily, causes the potential safety hazard of electric fire, does not conform to the performance requirement of safe power consumption and distribution, for this reason need provide a novel tertiary terminal box that can conveniently remove.

Disclosure of Invention

The invention aims to provide a movable solar three-stage terminal box, which can effectively avoid the phenomena of unreasonable protection functions such as short circuit, overload, electric leakage and the like, ensure the solar output power and meet the requirements of outdoor power utilization and power distribution. In order to achieve the purpose, the invention adopts the following technical scheme:

according to one aspect of the invention, a mobile solar three-level terminal box is provided, which comprises a supporting foot frame, a box body, a cover body and a door body, wherein the cover body is fixedly covered at the top end of the box body, one edge of a door frame of the box body is movably installed in a hinged manner with one side edge of the door body, the other side edge of the door body is connected with the other edge of the door frame of the box body through a door lock when the door body is closed, solar cell panels are respectively arranged above the cover body or on two sides and the rear side of the cover body, a rotating table for fixing the bottom end of the box body is arranged at the top end of the supporting foot frame, an L-shaped step for accommodating and fixing the bottom end of the box body is arranged in the rotating table, a solar control unit, a wiring unit and a storage battery are arranged in the box body from top to bottom, the, the solar control unit with the wiring unit is connected between revolving stage and the supporting leg bottom and be close to the supporting leg bottom and be provided with a supporting bench be provided with the stranded conductor dish that is used for coiling the power transmission line on the supporting bench the bottom of box is provided with walks the line hole, the one end of coiling the power transmission line in this stranded conductor dish pass walk the line hole with the wiring unit is connected, the other end of the power transmission line on this stranded conductor dish is the free end and wears out from the lateral wall of stranded conductor dish.

Preferably, the cover body is provided with the solar cell panel above the box body, the box body is provided with a mounting assembly for supporting the solar cell panel, the mounting assembly comprises one or more transverse beams which are arranged on the middle upper part of the box body and outside the box body, the two ends of each transverse beam are vertically provided with a first supporting column and a second supporting column upwards, one side of the solar cell panel is hinged to the first supporting column, the other side of the solar cell panel is connected with the second supporting column in a sliding manner, and the two ends of each transverse beam are connected with the box body through inclined rods.

Preferably, the height of the second support column is far greater than that of the first support column, and the height of the first support column is greater than that of the plane where the cover body is located.

In a further preferred embodiment of the above solution, the solar control unit includes a DC/DC converter, a charge/discharge controller, a central controller, an MPPT controller, an inverter, a high-voltage side switch, and a transformer, an output end of the solar panel is connected to an input end of the DC/DC converter, an output end of the DC/DC converter is connected to an input end of the charge/discharge controller, the charge/discharge controller is connected to the inverter and the storage battery, respectively, an output end of the storage battery is connected to an input end of the inverter, a control end of the central controller is connected to a control end of the charge/discharge controller, a control end of the MPPT controller, and a control end of the inverter, an output end of the MPPT controller is connected to the DC/DC converter, and an output end of the inverter is connected to the high-voltage side of the transformer through the high-voltage side switch, the high-voltage side output end of the transformer is connected with the wiring unit, and the bottom end of the box body is provided with a heat dissipation device which is connected with the central controller.

Preferably, the solar control unit further comprises a temperature and humidity sensor, an illumination sensor and an angle sensor, and an output end of the temperature and humidity sensor, an output end of the illumination sensor and an output end of the angle sensor are respectively connected with the central controller.

Above-mentioned scheme is further preferred, the wiring unit includes the empty division of inlet wire switch, inlet wire at least, surge protector and a plurality of being qualified for the next round of competitions empty division, the input of inlet wire switch passes through the power supply line and is connected with the power side, the output of inlet wire switch respectively with the empty input of opening of inlet wire, surge protector's input is connected, the empty output of opening of inlet wire is connected with every empty input of opening of being qualified for the next round of competitions respectively, surge protector's output pass through the wire with the box is connected, the wiring unit still includes the power supply socket, the empty output of opening of being qualified for the next round of competitions with the power supply socket is.

Preferably, the top end of the box body is accommodated in the bottom surface of the cover body, and the top end of the box body and the bottom surface of the cover body are detachably connected to form a whole.

According to the scheme, the top end of the box body is closed, the top end of the box body is provided with the air holes, and the bottom surface of the cover body is provided with the air holes matched with the air holes.

Above-mentioned scheme is further preferred still be provided with the handle in lid top outside, this handle is the arc form.

In a further preferred aspect of the above aspect, the support foot rest is inclined downward to fix the rotary table and the support table, and the cable reel is further fixedly connected to the support foot rest by bolts via a reinforcement member spanning the side portion of the bottom end of the support foot rest.

In summary, due to the adoption of the technical scheme, the invention has the following technical effects:

(1) the invention can effectively ensure that the switch box (box body) moves within the range of 30m around the distribution electric box, the switch box can move within the range of 3m of the electric equipment, and can effectively avoid the phenomena of unreasonable protection functions such as short circuit, overload, electric leakage and the like, and the box body is convenient to move, thereby meeting the construction requirements that the switch box corresponds to one gate and each electric equipment has own switch box or terminal box, ensuring the electric safety of construction sites, preventing electric shock and electric fire accidents in the electric process, and ensuring the safety of human bodies and equipment. Thereby ensuring that the box body is continuously and reliably grounded, and effectively improving the problem that the temperature in the box body is overhigh and can not be discharged.

(2) The solar three-level terminal box has the advantages of good sealing performance, difficult water leakage, good heat dissipation and ventilation effects, and capability of overcoming the defects of high cost, poor power utilization efficiency and unreasonable power distribution of the conventional photovoltaic power generation terminal box. The solar three-level terminal box adopts the MPPT controller to dynamically adjust the MPPT point of the solar panel, so that the solar panel always works near the maximum power point under different temperature environments and different illumination intensities, the highest charging efficiency of a storage battery is achieved, the solar output power is ensured, and the requirements of outdoor power utilization and power distribution are met.

Drawings

FIG. 1 is a schematic plan view of a mobile solar three-stage terminal box according to the present invention;

FIG. 2 is a schematic view of the position structure between the three-stage terminal box and the supporting foot according to the present invention;

FIG. 3 is a side view of the case of the present invention;

FIG. 4 is a front view of the container of the present invention in a closed state;

3 FIG. 3 5 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 the 3 case 3 of 3 the 3 present 3 invention 3; 3

FIG. 6 is a sectional view taken along line B-B of the case of the present invention;

FIG. 7 is a control schematic of the solar control unit of the present invention;

FIG. 8 is an electrical schematic of the wiring lug of the present invention;

in the attached drawings, 1-a box body, 2-a cover body, 3-a door body, 4-a wiring unit, 5-a supporting foot stand, 6-a storage battery, 7-a solar control unit, 8-a solar panel, 9-a door lock, 10-a wiring hole, 11-a heat dissipation device, 20-a handle, 21-a vent hole, 40-a supporting strip, 50-a rotating platform, 51-L-shaped steps, 52-a twisting disk, 53-a supporting platform, 54-a reinforcing member, 55-a wheel, 56-a driving device, 70-a DC/DC converter, 71-a charge and discharge controller, 72-a central controller, 73-an MPPT controller, 74-an inverter, 75-a high-voltage side switch, 76-a transformer and 77-a temperature and humidity sensor, 78-illumination sensor, 79-angle sensor, 80-beam, 81-first support column, 82-second support column, 83-diagonal.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings by way of examples of preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.

As shown in fig. 1, 2, 3, 4 and 5, the mobile solar three-stage terminal box according to the present invention comprises a support foot stand 5, a box body 1, a cover body 2 and a door body 3, wherein the cover body 2 is fixedly covered on the top end of the box body 1, one edge of a door frame of the box body 1 is movably hinged with one side edge of the door body 3, the other side edge of the door body 3 is connected with the other edge of the door frame of the box body 1 through a door lock 9 when closed, a layer of waterproof paint or sealing adhesive tape is coated on the contact edge of the door body 3 and the door frame of the box body 1, solar panels 8 are respectively arranged above the cover body 2 or on both sides and the rear side of the cover body, a rotary table 50 for fixing the bottom end of the box body 1 is arranged on the top end of the support foot stand 5, an L-shaped step 51 for accommodating and fixing the bottom end of the box body 1 is arranged, so that the box body 1 is placed in the downward sunken L-shaped step 51, thereby improving the stability of the box body 1 fixed on the rotating platform 50, being not easy to shake or slide, and not influencing the opening or closing of the door body 1, a solar control unit 7, a wiring unit 4 and a storage battery 6 are arranged in the box body 1 from top to bottom, the solar panel 8 is connected with the storage battery 6, the storage battery 6 is connected with the solar control unit 7, the solar control unit 7 is connected with the wiring unit, a support platform 53 is arranged between the rotating platform 50 and the bottom end of the support foot rest 5 and close to the bottom end of the support foot rest 5, a stranded wire disc 52 for coiling the power transmission wire is arranged on the support platform 53, a wire feeding hole 10 is arranged at the bottom end of the box body 1, one end of the power transmission wire coiled in the stranded wire disc 52 passes through the wire feeding hole 10 to be connected with the, the power line of the electric equipment penetrates out through the wiring hole 10 to be connected with the electric equipment for power supply, the electric energy output by the solar cell panel 8 enters the box body for conversion by using the power transmission line and passes through the wiring hole 10, the other end of the power transmission line on the stranded wire disc 52 is a free end and penetrates out from the side wall of the rubber wire disc 52, after the power transmission line penetrates out from the side wall of the stranded wire disc 52, when the power transmission line wound in the rubber wire disc 52 is pulled, the electric energy output by the box body 1 (a terminal box or a switch box) can be supplied to the electric equipment for use, generally, the power transmission line wound in the stranded wire disc 52 is not more than 30m, so that the electric equipment moves within the range of 30m from the box body 1, the outer part of the top end of the cover body 2 is also provided with a handle 20, the handle 20 is arc-shaped to conveniently carry the box body 1, the support foot frame 5 is downwards inclined to install and fix the rotating platform 50 and the support platform 53, the wire coil 52 is fixedly connected with a bolt through a reinforcing member 54 spanned on the side part of the bottom end of the support foot frame 5, the top end of the box body 1 is contained in the bottom surface of the cover body 2, and the top end of the box body 1 and the bottom surface of the cover body 2 are detachably connected into a whole, so that the box body is convenient to move, install and detach.

As shown in fig. 1, 3 and 4, the solar panel 8 is disposed above the cover, a mounting assembly for supporting the solar panel 8 is disposed on the box 1, the mounting assembly includes one or more cross beams 80 traversing the middle upper portion of the box 1 and disposed outside the box 1, a first supporting column 81 and a second supporting column 82 are vertically disposed at two ends of the cross beam 8, one side of the solar panel 8 is hinged to the first supporting column 81, the other side of the solar panel 8 is slidably connected to the second supporting column 82, two ends of the cross beam 80 are connected to the box 1 through an inclined rod 83 to enhance the stability of the cross beam 80, the height of the second supporting column 82 is much greater than that of the first supporting column 81, the height of the first supporting column 81 is greater than that of the cover 2, after a solar cell panel 8 consisting of a cross beam 80 transversely crossing the middle upper part of the box body 1 and the outer part of the box body 1 is provided with a supporting frame, two ends of the cross beam 80 are vertically provided with a first supporting column 81 and a second supporting column 82 upwards, and the height of the first supporting column 81 is slightly higher than that of the cover body 2, so that one end of the solar cell panel 8 is hinged with the first supporting column 81 and then is installed upwards in an inclined mode, at the moment, the solar cell panel 8 is in sliding connection with the second supporting column 82 to form a certain inclination, the sunlight is well collected, the relative height between the solar cell panel 8 and the second supporting column 82 is adjusted, the inclination adjustment of the solar cell panel 8 is completed, a certain included angle is always kept between the solar cell panel and the sunlight, when the rotating platform 50 is driven to horizontally rotate by a driving device 55 (optional variable frequency motor) arranged right below the rotating, the solar cell panel 8 is driven to horizontally rotate, so that the backlight collection of the solar cell panel 8 is eliminated when the sunlight changes along with time, the change condition of the sunlight can be tracked at any time, and the solar cell panel 8 is driven to rotate to collect the sunlight.

As shown in fig. 1, 2, 5, 6 and 7, the solar control unit 7 includes a DC/DC converter 70, a charge/discharge controller 71, a central controller 72, an MPPT controller 73, an inverter 74, a high-voltage side switch 75 and a transformer 76, the output of the solar panel 8 is connected to the input of the DC/DC converter 70, an output terminal of the DC/DC converter 70 is connected to an input terminal of the charge and discharge controller 71, the charge/discharge controller 71 is connected to the inverter 74 and the battery 6, respectively, an output terminal of the battery 6 is connected to an input terminal of the inverter 74, the control end of the central controller 72 is respectively connected with the control end of the charge and discharge controller 71, the control end of the MPPT controller 73 and the control end of the inverter 74, and the central controller 72 is an ARM single chip microcomputer or a DSP processor. The output end of the MPPT controller 73 is connected to the DC/DC converter 70, and the MPPT controller is called a "maximum power point tracking" (maximum power point tracking) solar controller, and dynamic adjustment is realized through the MPPT point of the MPPT controller solar panel, so that the solar panel always works near the maximum power point in different temperature environments and different illumination intensities, thereby achieving the highest charging efficiency for the storage battery. The output of inverter 74 pass through high pressure side change over switch 75 with the high pressure side of transformer 76 is connected, the high pressure side output of transformer 76 with wiring unit 4 connects the bottom of box 1 is provided with heat abstractor 11, this heat abstractor 11 with central controller 72 connects, solar control unit 7 still includes temperature and humidity sensor 77 and light intensity sensor 78, temperature and humidity sensor's output, light intensity sensor's output respectively with central controller 72 connects, solar control unit 7 still includes temperature and humidity sensor 77, light intensity sensor 78 and angle sensor 79, temperature and humidity sensor 77's output, light intensity sensor 78's output, angle sensor 79's output respectively with central controller 72 connects. In the invention, solar energy is transmitted to a DC/DC converter 70 for boost conversion through a solar panel 8 for energy conversion, then transmitted to a storage battery 6 for storage through a charge-discharge controller 71, then converted into alternating current through an inverter 74 for filtering, and then respectively connected to the high-voltage side of one or more transformers 76 for shunting processing through a high-voltage side change-over switch 75 (generally using a high-voltage switch group) so as to save the distribution cost, high-quality electric energy is output through transformer coupling, and the ripple between the low-voltage side output end of the transformer and the inverter output is fully eliminated, thereby improving the quality of electric energy conversion, in the invention, a current/voltage transformer or a current/voltage sensor can be arranged at the high-voltage side of the transformer 76 for detecting and tracking the voltage or/and the current at the high-voltage side, thereby monitoring the electricity load condition of electric equipment in real, the electric energy output from the transformer 76 reaches the ac electric equipment through the wiring unit 4, and at the same time, the illumination sensor 78 and the angle sensor 79 collect the illumination intensity of the sunlight irradiating the solar cell panel 8 and sense the position angle of the solar cell panel 8, respectively, and adjust the angle of the solar cell panel 8 in time through the rotating table 50 to eliminate the backlight shadow, and the temperature and humidity sensor 77 detects the temperature and humidity inside the box 1 and adjusts the temperature and humidity inside the box 1 through the heat dissipation device 11 (a blower or an exhaust fan). In the invention, the top end of the box body 1 is accommodated in the bottom surface of the cover body 2, the top end of the box body 1 and the bottom surface of the cover body 2 are detachably connected into a whole, the top end of the box body 1 is closed, the top end of the box body 1 is provided with the air holes 22, the bottom surface of the cover body 1 is provided with the air holes 21 mutually matched with the air holes 22, the bottom surface of the cover body 2 is larger than the top end surface of the box body 1, so that rainwater can be effectively prevented from wetting electrical components in the box body 1, heat generated when electrical devices in the box body 1 work is dissipated through the air holes 22 and is discharged through the air holes 21 in the bottom surface of the cover body 2, when the temperature in the box body 1 rises, the phenomena of line disconnecting link, line inlet opening or line outlet opening tripping are avoided, thereby effectively improving the problem that the temperature in the box body 1 is too high and cannot be discharged, and the hot air or moisture in the box body 1 is accelerated to be, when the temperature and humidity sensor 77 detects that the temperature and humidity inside the box 1 are too high, the heat sink 11 is started to discharge the moisture or high-temperature air inside the box 1 from the bottom of the box 1 to the vent 21, so that the temperature reduction speed is accelerated.

In the present invention, the central controller 72 shown in fig. 1, 3 and 7 is combined to detect the output voltage amplitude of the solar panel 2, when the output voltage amplitude is greater than the preset value under the condition of sufficient illumination intensity, the MPPT controller 73 is started, the storage battery 6 (battery pack) is charged through the DC/DC converter 70 and the charge/discharge controller 71, and the DC power is inverted into 220V ac power by the inverter 74, and the power is supplied to the electric equipment through the wiring unit 4; when the illumination intensity is insufficient, if the central controller 72 detects that the amplitude of the output voltage of the solar cell panel 8 is smaller than the preset value, the capacity of the electric quantity in the storage battery 6 is detected, if the electric quantity in the storage battery 6 is sufficient, the storage battery 6 completes inversion of direct current and 220V alternating current through the inverter 74, the electric equipment provides a power supply, and if the electric quantity of the storage battery 6 is insufficient, the high-voltage side switch 75 is controlled to complete switching between the solar power supply and mains supply.

In the present invention, as shown in fig. 1, fig. 3, fig. 5, fig. 7 and fig. 8, a power supply output by a transformer 76 is connected to a connection unit 4 through a high-voltage side switch 75 for power distribution, where the connection unit 4 at least includes a line incoming disconnecting link QS1, a line incoming disconnecting link QS2, a surge protector SF and a plurality of line outgoing disconnecting links, a rated current of the line incoming disconnecting link QS2 in a box is not greater than 32A, a leakage current of the leakage protector is not greater than 30mA, a rated leakage operation time of the leakage protector is not greater than 0.1s, a rated current of the line outgoing disconnecting link leakage protector is not greater than 32A, and a leakage current of the leakage protector is not greater than 30mA, an input end of the line incoming disconnecting link QS1 is connected to a low-voltage side (an output end is a power supply side) of the transformer 76 for power supply, or connected to the power supply side (a power supply line wound around a winding coil, The input end of a surge protector SF is connected, the output end of the incoming line air switch QS2 is connected with the input end of each outgoing line air switch, each outgoing line air switch is composed of an outgoing line air switch QF1, an outgoing line air switch QF2, an outgoing line air switch QF3, an outgoing line air switch QF4 and an outgoing line air switch QF5, wherein the outgoing line air switch QF1 and the outgoing line air switch QF2 are three-phase 380V air switches, the outgoing line air switch QF3, the outgoing line air switch QF4 and the outgoing line air switch QF5 are 3 220V single-phase air switches, the wiring unit 4 further comprises a power supply socket, the output end of the outgoing line air switch is connected with the power supply socket TC, the 220V single-phase air switch is connected with the power supply socket TC for power supply, and the output end of the surge protector SF is connected with the box body 1 through. The surge protector FS is used for avoiding damages to a switch part of a terminal box or electric equipment caused by lightning stroke, short circuit or surge current generated by sudden starting or closing of the electric equipment, and simultaneously ensuring continuous and reliable grounding of the box body.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.

Claims

1. The utility model provides a tertiary terminal box of portable solar energy which characterized in that: the solar energy power generation box comprises a supporting foot frame, a box body, a cover body and a door body, wherein the cover body is fixedly covered on the top end of the box body, one edge of a door frame of the box body is movably installed in a hinged mode with one edge of the door body, the other edge of the door body is connected with the other edge of the door frame of the box body through a door lock when the door body is closed, solar cell panels are respectively arranged above the cover body or on two sides and the rear side of the cover body, a rotating platform used for fixing the bottom end of the box body is arranged at the top end of the supporting foot frame, an L-shaped step used for accommodating and fixing the bottom end of the box body is arranged in the rotating platform, a solar energy control unit, a wiring unit and a storage battery are arranged in the box body from top to bottom, the solar cell panels are connected with the storage battery, the storage battery is connected with the solar energy control unit, a stranded wire disc for coiling the power transmission line is arranged on the supporting table, a wiring hole is formed in the bottom end of the box body, one end of the power transmission line coiled in the stranded wire disc penetrates through the wiring hole to be connected with the wiring unit, and the other end of the power transmission line on the stranded wire disc is a free end and penetrates out of the side wall of the stranded wire disc;

the solar control unit comprises a DC/DC converter, a charge and discharge controller, a central controller, an MPPT controller, an inverter, a high-voltage side change-over switch and a transformer, and further comprises a temperature and humidity sensor, an illumination sensor and an angle sensor, wherein the output end of the temperature and humidity sensor, the output end of the illumination sensor and the output end of the angle sensor are respectively connected with the central controller; the output end of the solar panel is connected with the input end of the DC/DC converter, the output end of the DC/DC converter is connected with the input end of the charge-discharge controller, the charge and discharge controller is respectively connected with the inverter and the storage battery, the output end of the storage battery is connected with the input end of the inverter, the control end of the central controller is respectively connected with the control end of the charge-discharge controller, the control end of the MPPT controller and the control end of the inverter, the output end of the MPPT controller is connected with the DC/DC converter, the output end of the inverter is connected with the high-voltage side of the transformer through a high-voltage side switch, the high-voltage side output end of the transformer is connected with the wiring unit, the bottom end of the box body is provided with a heat dissipation device, and the heat dissipation device is connected with the central controller; the solar cell panel is arranged above the cover body, the box body is provided with an installation assembly for supporting the solar cell panel, the installation assembly comprises one or more cross beams which are transversely arranged at the middle upper part of the box body and arranged outside the box body, two ends of each cross beam are vertically provided with a first support column and a second support column upwards, one side of the solar cell panel is hinged with the first support column, the other side of the solar cell panel is connected with the second support column in a sliding manner, and two ends of each cross beam are connected with the box body through inclined rods;

the wiring unit at least comprises an incoming line disconnecting link, incoming line disconnecting links, surge protectors and a plurality of outgoing line disconnecting links, wherein the input end of the incoming line disconnecting link is connected with a power supply side through a power supply line, the output end of the incoming line disconnecting link is respectively connected with the input end of the incoming line disconnecting link and the input end of the surge protector, the output end of the incoming line disconnecting link is respectively connected with the input end of each outgoing line disconnecting link, the output end of the surge protector is connected with the box body through a wire, the wiring unit further comprises a power supply socket, and the output end of the outgoing line disconnecting link is connected with the power supply socket; the top end of the box body is accommodated in the bottom surface of the cover body, and the top end of the box body and the bottom surface of the cover body are detachably connected into a whole; the top end of the box body is sealed, the top end of the box body is provided with air holes, and the bottom surface of the cover body is provided with air holes matched with the air holes.

2. The mobile solar three-stage terminal box of claim 1, wherein: the height of the second supporting column is far greater than that of the first supporting column, and the height of the first supporting column is greater than that of a plane where the cover body is located.

3. The mobile solar three-stage terminal box according to claim 1 or 2, wherein: the outer part of the top end of the cover body is also provided with a lifting handle which is arc-shaped.

4. The mobile solar three-stage terminal box of claim 1, wherein: the supporting foot frame is downwards inclined, the rotating platform and the supporting platform are installed and fixed, and the wire twisting disc is fixedly connected with bolts through reinforcing pieces stretching on the side portion of the bottom end of the supporting foot frame.