Intelligent monitoring module of photovoltaic combiner box

Abstract

The utility model provides a photovoltaic combiner box intelligent monitoring module, which comprises a shell, a detection mainboard, Hall elements and a positioning mechanism, the detection mainboard, the Hall elements and the positioning mechanism are arranged in the shell, the shell comprises a front cover and a rear cover which are connected in a buckling way, the detection mainboard is arranged on the front cover, and the detection mainboard is provided with a plurality of Hall elements which are connected with the detection mainboard in an inserting way; the positioning mechanisms and the Hall elements are arranged in a one-to-one correspondence mode, each positioning mechanism comprises a front positioning cylinder and a rear positioning cylinder, the front positioning cylinders are arranged on the front cover, the rear positioning cylinders are arranged on the rear cover, the Hall elements are arranged outside the front positioning cylinders in a sleeving mode, and when the rear cover is connected with the front cover, the front positioning cylinders and the rear positioning cylinders are matched to position the Hall elements. According to the utility model, the plurality of Hall elements are fixed in the shell through the positioning mechanism and the insertion of the mainboard, glue injection and welding are not needed, the structure is simple, the disassembly and assembly are convenient, the manufacturing and maintenance cost is reduced, and the repair and maintenance are more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of solar power generation, in particular to an intelligent monitoring module for a photovoltaic busbar box. Background Art

[0002] With the extensive utilization of solar energy, a clean energy source, in the world, domestic photovoltaic projects use busbar boxes / direct current cabinets to collect current. Busbar boxes / direct current cabinets are generally used in medium and large-sized photovoltaic systems. Since there are many component strings and outputs in a photovoltaic array, a device is needed to concentrate these outputs so that they can be directly connected to an inverter. The monitoring module detects information such as direct current, voltage, and temperature of each input loop in the busbar box during the current collection process of photovoltaic components and transmits it to the background in a communication manner, which can ensure that the circuit state of the photovoltaic system is easy to monitor in real time and reduce the probability of power outage due to faults in the photovoltaic system.

[0003] The monitoring module mainly consists of parts such as Hall elements, signal processing circuit boards, and interfaces. Indirect measurement is carried out using Hall elements to isolate the strong electricity loop and the weak electricity loop, reduce the interference of the strong electricity part, and ensure the safety of the loop at the same time. The monitoring module can judge the operating parameters of each input loop, detect the working state of the fuse of each loop, and when a fuse blows, an alarm can be issued to remind the on-duty operator to deal with it in time. Cooperating with the monitoring software, it can analyze and self-diagnose the internal faults and alarm situations of the busbar box, locate and analyze overcurrent, open circuit of each loop, too high bus voltage, actions of circuit breakers and lightning arresters, etc., and inform the on-duty operator. At the same time, the overcurrent and overvoltage parameters can be adjusted according to actual operating needs.

[0004] In traditional monitoring modules, generally, a single Hall element (including a Hall chip and a magnetic ring) is encapsulated in a shell as an independent unit, and then multiple independent units are welded on the circuit board. This assembly method is cumbersome and costly. In addition, there is another assembly method for existing monitoring modules: multiple Hall elements are fixed on the detection main board by injection molding and pasting, and then encapsulated in an overall shell. Although it reduces the manufacturing difficulty and cost, the adhesive causes the Hall elements to be easily detached or displaced due to the thermal expansion and contraction effect, affecting the detection accuracy. Moreover, this method is not conducive to maintenance and replacement. When only one Hall element is damaged, all Hall elements and the main board for bonding and fixing need to be replaced, which is time-consuming and laborious, and the maintenance cost is high. Summary of the Utility Model

[0005] The utility model aims to provide an intelligent monitoring module for a photovoltaic busbar box to overcome the deficiencies in the prior art.

[0006] To solve the above technical problems, the technical solution of the present utility model is: an intelligent monitoring module for a photovoltaic busbar box, which includes a main control module. The main control module includes a housing and a detection main board, a Hall element, and a positioning mechanism disposed inside the housing. The housing includes a front cover and a rear cover connected by snap connection. The detection main board is installed on the front cover and is detachably connected to the front cover. A plurality of Hall elements are plugged into the detection main board. The positioning mechanism is arranged in one-to-one correspondence with the Hall element and includes a front positioning cylinder and a rear positioning cylinder. The front positioning cylinder is arranged on the front cover, and the rear positioning cylinder is arranged on the rear cover. The Hall element is sleeved outside the front positioning cylinder. When the rear cover is connected to the front cover, the front positioning cylinder and the rear positioning cylinder cooperate to position the Hall element.

[0007] Further, in the above intelligent monitoring module for a photovoltaic busbar box, the end of the rear positioning cylinder close to the front positioning cylinder is provided with a jack. When the rear cover is connected to the front cover, the front positioning cylinder is inserted into the jack and plugged into the rear positioning cylinder to limit the axial displacement of the Hall element. Preferably, a washer is further sleeved outside the front positioning cylinder and is located between the Hall element and the rear positioning cylinder.

[0008] Further, in the above intelligent monitoring module for a photovoltaic busbar box, the middle parts of the front positioning cylinder and the rear positioning cylinder are provided with a communicating cable through hole, and the cable through hole in the rear positioning cylinder is a tapered hole. The small end of the tapered hole has the same aperture as the cable through hole in the front positioning cylinder, and the aperture gradually becomes larger from the inside to the outside.

[0009] Further, in the above intelligent monitoring module for a photovoltaic busbar box, the chip of the Hall element is plugged into the detection main board. An opening groove is provided on one side of the magnetic ring of the Hall element, and the chip is inserted into the opening groove.

[0010] Further, in the above intelligent monitoring module for a photovoltaic busbar box, the main control module further includes a signal processing main board, an LED display screen, a key, and an interface. The signal processing main board is arranged above the detection main board and is electrically connected to the detection main board through a plug wire. The LED display screen, the key, and the interface are all arranged on the signal processing main board.

[0011] Further, in the above intelligent monitoring module for a photovoltaic busbar box, the housing further includes an upper cover. The front cover, the rear cover, and the upper cover are assembled into a sealed housing. The front cover and the rear cover are both U-shaped structural plates, and the rear cover covers the outside of the front cover. A notch corresponding to the signal processing main board is provided at the top of the rear cover. The upper cover is inlaid in the notch at the top of the rear cover, and installation grooves for installing the LED display screen, the key, and the interface are provided on the upper cover. Preferably, a panel is further provided at the top of the housing. The panel covers the top surfaces of the rear cover and the upper cover, and markings are provided thereon, including key markings, names, etc.

[0012] Furthermore, in the above-mentioned intelligent monitoring module for a photovoltaic busbar box, a plurality of grooves are evenly arranged at the bottom of the outer shell, and the plurality of grooves form a bridge-like structure, which is beneficial to the upward heat flow and heat dissipation inside the busbar box, and also prevents the module from being damaged due to heat concentration and aging; a boss is provided at the bottom of the rear cover at an interval from the groove, the boss is hollow, and a convex plate inserted into the boss is provided at the bottom of the front cover.

[0013] Furthermore, in the above-mentioned intelligent monitoring module for a photovoltaic busbar box, a plurality of snap-fasteners I are provided at the top of the front cover, and a snap-fastener groove I corresponding to the snap-fasteners I is provided at the top of the rear cover and the top cover; a plurality of snap-fasteners II are provided at the bottom of the front cover on the bottom surface of the convex plate, and a snap-fastener groove II corresponding to the snap-fasteners II is provided at the bottom of the rear cover, and the snap-fasteners I and the snap-fasteners II are arranged staggeredly up and down. Preferably, the snap-fasteners I and the snap-fasteners II have the same structure, and each includes a plurality of evenly arranged right-angled trapezoidal bosses, and the inclined surface of the right-angled trapezoidal boss is arranged on the side close to the rear cover.

[0014] Furthermore, in the above-mentioned intelligent monitoring module for a photovoltaic busbar box, a plurality of extension modules are further included. A protruding connector I is provided on one side of the extension module, and a connector II is provided on the other side. A connector II installed on the detection main board is provided on one side of the main control module. The extension module and the main control module are connected through the connector I and the connector II, and the extension modules are also connected to each other through the connector I and the connector II.

[0015] Furthermore, in the above-mentioned intelligent monitoring module for a photovoltaic busbar box, the extension module and the main control module have similar structures, including an extension outer shell and an extension main board arranged in the extension outer shell, and a plurality of Hall elements and a positioning mechanism corresponding to the Hall elements are also arranged in the extension outer shell. The connector I and the connector II located on the extension module are both installed on the extension main board. The Hall elements in the extension module are inserted into the extension main board and positioned by the positioning mechanism provided on the extension outer shell. The extension outer shell includes an extension rear cover and an extension front cover, and the extension rear cover and the extension front cover are connected by snap-fasteners.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: The Hall elements of the present utility model do not adopt individual independent outer shells, and can be fixed in position through the positioning mechanism and the insertion into the main board, without the need for gluing or welding. They can be repaired individually at the damaged part during maintenance. The structure is simple, and the disassembly and assembly are convenient, which not only reduces the manufacturing and maintenance costs, but also makes the maintenance more convenient. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is an exploded schematic diagram of the intelligent monitoring module of the photovoltaic busbar box of the present invention;

[0019] Figure 2 It is the front view of the intelligent monitoring module of the photovoltaic busbar box of the present invention;

[0020] Figure 3 It is an exploded schematic diagram of the main control module of the intelligent monitoring module of the photovoltaic busbar box of the present invention;

[0021] Figure 4 It is a connection schematic diagram of the Hall element and the positioning mechanism of the intelligent monitoring module of the photovoltaic busbar box of the present invention Figure 1 ;

[0022] Figure 5 It is a connection schematic diagram of the Hall element and the positioning mechanism of the intelligent monitoring module of the photovoltaic busbar box of the present invention Figure 2 ;

[0023] Figure 6 It is a structural schematic diagram of the intelligent monitoring module of the photovoltaic busbar box of the present invention;

[0024] In the figure: 10, main control module; 20, extension module;

[0025] 1, housing; 11, front cover; 111, convex plate; 112, buckle one; 113, buckle two; 12, rear cover; 121, groove; 122, convex platform; 123, card slot one; 124, card slot two; 13, upper cover; 14, panel;

[0026] 2, detection main board;

[0027] 3, Hall element; 31, chip; 32, magnetic ring;

[0028] 4, positioning mechanism; 41, front positioning cylinder; 42, rear positioning cylinder; 421, jack; 422, cable perforation,

[0029] 51, signal processing main board; 52, LED display screen; 53, button; 54, interface;

[0030] 61, connector one; 62, connector two;

[0031] 7. Extended housing; 71. Extended front cover; 72. Extended rear cover; 8. Extended main board. Detailed implementation manner

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0033] Embodiment 1

[0034] As Figures 1-6 shown, an intelligent monitoring module for a photovoltaic busbar box includes a main control module 10. The main control module 10 includes a housing 1 and a detection main board 2, a Hall element 3, and a positioning mechanism 4 disposed inside the housing 1. The housing 1 includes a front cover 11 and a rear cover 12 connected by a buckle. The detection main board 2 is installed on the front cover 11 and is detachably connected to the front cover 11. A plurality of Hall elements 3 inserted thereinto are provided on the detection main board 2. The number of Hall elements 3 of the main control module 10 is designed according to actual needs, generally not less than 10. In this embodiment, 20 Hall elements 3 are set; the positioning mechanism 4 is provided corresponding to the Hall element 3 one by one, and includes a front positioning cylinder 41 and a rear positioning cylinder 42. The front positioning cylinder 41 is disposed on the front cover 11, and the rear positioning cylinder 42 is disposed on the rear cover 12. The Hall element 3 is sleeved outside the front positioning cylinder 41. When the rear cover 12 is connected to the front cover 11, the front positioning cylinder 41 and the rear positioning cylinder 42 cooperate to position the Hall element 3.

[0035] Specifically, as Figure 4 、 5 shown, the end of the rear positioning cylinder 42 close to the front positioning cylinder 41 is provided with a jack 421. When the rear cover 12 is connected to the front cover 11, the front positioning cylinder 41 is inserted into the jack 421 to be inserted and connected to the rear positioning cylinder 42, restricting the axial displacement of the Hall element 3. To reduce damage to the Hall element 3, a washer (not shown in the figure) is further sleeved outside the front positioning cylinder 41 and located between the Hall element 3 and the rear positioning cylinder 42. The chip 31 of the Hall element 3 is inserted and connected to the detection main board 2, and is inserted and connected to the detection main board 2 through the pins of the chip 31. An opening groove is provided on one side of the magnetic ring 32 of the Hall element 3, and the chip 31 is inserted into the opening groove, and the chip 31 and the opening groove are in clearance fit. Through this setting, the circumferential rotation of the Hall element 3 is restricted, and the Hall element 3 is completely positioned in cooperation with the positioning mechanism 4. There is no need for glue injection fixation, and the positioning of the Hall element 3 is completed when the rear cover 12 is closed, simplifying the manufacturing process, reducing the cost, and making disassembly and assembly more convenient.

[0036] All components of the present utility model are set to be detachable. The Hall element 3 does not adopt a single independent housing, and can be fixed in position through the positioning mechanism 4 and insertion into the detection main board 2, without the need for glue injection or welding for fixation. During maintenance, it can be repaired individually at the damaged part, with convenient disassembly and assembly. This not only reduces the manufacturing and maintenance costs, but also makes maintenance more convenient.

[0037] In the above structure, as Figure 1 , 4 , as shown in 5, the main control module 10 further includes a signal processing main board 51, an LED display screen 52, a key 53, and an interface 54. The signal processing main board 51 is arranged above the detection main board 2 and is electrically connected to the detection main board 2 through a wire harness. Since the signal processing main board 51 is more vulnerable to external factors such as overvoltage and overcurrent and is more likely to be damaged, this setting allows only the signal processing main board 51 to be replaced when it is damaged, reducing the difficulty of maintenance and the maintenance cost. The LED display screen 52, the key 53, and the interface 54 are all arranged on the signal processing main board 51, and the communication, display, and other auxiliary functions of the main control module 10 are realized through the signal processing main board 51, the LED display screen 52, the key 53, and the interface 54.

[0038] Embodiment 2

[0039] Based on the structure of Embodiment 1, as Figures 3-5 shown, a cable through-hole 422 is provided in the middle of the front positioning cylinder 41 and the rear positioning cylinder 42. The aperture of the cable through-hole of the present utility model is relatively large. Since the housing of the Hall element with a single independent housing limits the Hall spacing, the aperture of the cable through-hole is relatively small, which is not conducive to wire threading construction and heat dissipation. In this embodiment, the Hall element 3 does not adopt a single independent housing, increasing the spacing between the Hall elements 3, thereby increasing the aperture of the cable through-hole 422, which is more conducive to heat dissipation. The cable through-hole 422 in the rear positioning cylinder 42 is a tapered hole. The small end of the tapered hole is equal to the aperture of the cable through-hole 422 in the front positioning cylinder 41, and the aperture gradually increases in the direction from the inside to the outside, that is, the large end of the tapered hole is close to the melting seat direction and away from the Hall element, which is more conducive to heat dissipation.

[0040] Among them, as Figures 1-3As shown, the housing 1 also includes an upper cover 13, and the front cover 11, the rear cover 12, and the upper cover 13 are assembled into a packaged housing 1; the front cover 11 and the rear cover 12 are both U-shaped structural plates, and the rear cover 12 is wrapped around the outside of the front cover 11, and the top of the rear cover 12 is provided with a notch corresponding to the signal processing mainboard 51, and the upper cover 13 is set in the notch at the top of the rear cover 12, and the upper cover 13 is provided with a mounting groove for the LED display screen 52, the button 53, and the interface 54. The overall structure of the housing 1 is simple, the installation is convenient, and the appearance is beautiful. In addition, a panel 14 is also provided on the top of the housing 1, and the panel 14 covers the top surface of the rear cover 12 and the upper cover 13, and is provided with logos, including button logos, names, etc., which further increases the aesthetics of the product.

[0041] like Figure 2 , 6 As shown, the bottom of the shell 1 is provided with a plurality of evenly arranged grooves 121, and the plurality of grooves 121 form a bridge hole structure, which is beneficial for the internal heat of the junction box to flow upward for heat dissipation, and also prevents the module from being damaged by aging due to heat concentration; the bottom of the rear cover 12 is provided with a boss 122 spaced apart from the groove 121, and the boss 122 is hollow, and the bottom of the front cover 11 is provided with a convex plate 111 plugged with the boss 122, which is beneficial for the installation of the rear cover 12 and the front cover 11, and has a certain guiding effect on the snap connection between the two.

[0042] like Figures 1-3 As shown in Figures 6 and 7, the top of the front cover 11 is provided with a plurality of snap-on 112, and the top of the rear cover 12 and the top of the upper cover 13 are provided with a slot 123 corresponding to the snap-on 112; the bottom of the front cover 11 is provided with a plurality of snap-on 2 113 located on the bottom surface of the convex plate 111, and the bottom of the rear cover 12 is provided with a slot 2 124 corresponding to the snap-on 2 113. The snap-on 112 and the snap-on 2 113 are staggered up and down, so that the connection between the rear cover 12 and the front cover 11 is more stable. It should be noted that not every convex plate 111 is provided with the snap-on 2 113, which can be flexibly set according to the overall length of the main control module 10. In this embodiment, the snap-on 112 and the snap-on 2 113 have the same structure, including a plurality of evenly arranged right-angled trapezoidal bosses, and the inclined surface of the right-angled trapezoidal bosses is provided on the side close to the rear cover 12, so that the snap-on can slide into the slot.

[0043] Example 3

[0044] Based on the structure of Example 2, Figure 1 , 2As shown, the above-mentioned intelligent monitoring module of the photovoltaic busbar box further includes a plurality of extension modules 20. When the main control module 10 cannot meet the requirements of the photovoltaic busbar box, the Hall elements for detection can be expanded by adding extension modules 20. One side of the extension module 20 is provided with a protruding connector one 61, and the other side is provided with a connector two 62. One side of the main control module 10 is provided with a connector two 62 installed on the detection main board 2. The extension module 10 and the main control module 20 are connected through the connector one 61 and the connector two 62. The extension modules 20 are also connected to each other through the connector one 61 and the connector two 62. The disassembly and assembly are convenient, making the expansion simple and convenient, with good flexibility, and suitable for busbar boxes with different numbers of input circuits.

[0045] Among them, as Figure 1 shown, the extension module 20 and the main control module 10 have a similar structure, including an extension housing 7 and an extension main board 8 provided in the extension housing 7. There are also a plurality of Hall elements 3 and a positioning mechanism 4 corresponding to the Hall elements 3 provided in the extension housing 7. The number of Hall elements 3 in the extension module 20 is small, generally not more than 5. In this embodiment, the extension module 20 is provided with 4 Hall elements 3. The connector one 61 and the connector two 62 located on the extension module 20 are both installed on the extension main board 8. The electrical connection between the extension module 20 and the main control module 10 is realized through the connector. The extension module 20 has the same Hall element positioning structure as the main control module 10, which is convenient for maintenance and replacement. Specifically, the Hall elements 3 in the extension module 20 are inserted into the extension main board 8 and positioned by the positioning mechanism 4 provided on the extension housing 7. In addition, the extension housing 7 includes an extension front cover 71 and an extension rear cover 72. The extension front cover 71 and the extension rear cover 72 are connected by a buckle. Since the extension module 20 is small and does not include a signal processing part, the extension housing 7 does not have an upper cover. The bottom of the extension housing 7 is also provided with a groove forming a bridge structure, and the top is also provided with a panel.

[0046] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0047] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only an independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A photovoltaic combiner box intelligent monitoring module, characterized in that: It includes a main control module, which includes a shell and a detection mainboard, a Hall element, and a positioning mechanism arranged in the shell. The shell includes a front cover and a rear cover connected by snaps. The detection mainboard is installed on the front cover. The detection mainboard is provided with a plurality of Hall elements plugged therein. The positioning mechanism is arranged in a one-to-one correspondence with the Hall element, including a front positioning cylinder and a rear positioning cylinder. The front positioning cylinder is arranged on the front cover, and the rear positioning cylinder is arranged on the rear cover. The Hall element is sleeved on the outside of the front positioning cylinder. When the rear cover is connected to the front cover, the front positioning cylinder and the rear positioning cylinder cooperate to position the Hall element.

2. The photovoltaic combiner box intelligent monitoring module according to claim 1, characterized in that: The rear positioning tube has an insertion hole at one end close to the front positioning tube. When the rear cover is connected to the front cover, the front positioning tube is inserted into the insertion hole and plugged with the rear positioning tube to limit the axial displacement of the Hall element.

3. The photovoltaic combiner box intelligent monitoring module according to claim 1 is characterized in that: The front positioning tube and the rear positioning tube are provided with a connecting cable through hole in the middle, and the cable through hole in the rear positioning tube is a tapered hole. The small end of the tapered hole is equal to the diameter of the cable through hole in the front positioning tube, and the diameter gradually increases from the inside to the outside.

4. The photovoltaic combiner box intelligent monitoring module according to claim 2, characterized in that: The chip of the Hall element is plugged into the detection main board, one side of the magnetic ring of the Hall element is provided with an open groove, and the chip is plugged into the open groove.

5. The photovoltaic combiner box intelligent monitoring module according to claim 1, characterized in that: The main control module also includes a signal processing mainboard, an LED display, buttons, and interfaces. The signal processing mainboard is arranged above the detection mainboard and is connected to the detection mainboard cable through a plug-in cable. The LED display, buttons, and interfaces are all arranged on the signal processing mainboard.

6. The photovoltaic combiner box intelligent monitoring module according to claim 1 or 5, characterized in that: The shell also includes an upper cover, and the front cover, rear cover and upper cover are assembled into a packaged shell; the front cover and rear cover are both U-shaped structural plates, and the rear cover is covered on the outside of the front cover, and the top of the rear cover is provided with a notch corresponding to the signal processing mainboard, the upper cover is embedded in the notch at the top of the rear cover, and the upper cover is provided with installation grooves for installing LED display screens, buttons and interfaces.

7. The photovoltaic combiner box intelligent monitoring module according to claim 6, characterized in that: The bottom of the shell is provided with a plurality of evenly arranged grooves, and the plurality of grooves form a bridge hole structure; the bottom of the rear cover is provided with a boss spaced apart from the grooves, and the boss is hollow; the bottom of the front cover is provided with a convex plate plugged into the boss.

8. The photovoltaic combiner box intelligent monitoring module according to claim 6, characterized in that: The top of the front cover is provided with multiple buckles 1, and the top of the back cover and the top of the upper cover are provided with a slot 1 corresponding to the buckle 1; the bottom of the front cover is provided with multiple buckles 2 located on the bottom surface of the convex plate, and the bottom of the back cover is provided with a slot 2 corresponding to the buckle 2, and the buckle 1 and the buckle 2 are staggered up and down.

9. The photovoltaic combiner box intelligent monitoring module according to claim 1, characterized in that: It also includes multiple extension modules, one side of the extension module is provided with a protruding connector 1, and the other side is provided with a connector 2. One side of the main control module is provided with a connector 2 installed on the detection mainboard. The extension module is connected to the main control module through connector 1 and connector 2, and each extension module is also connected through connector 1 and connector 2.

10. The photovoltaic combiner box intelligent monitoring module according to claim 9, characterized in that: The extension module includes an extension shell and an extension mainboard arranged in the extension shell, and the extension shell is also provided with a plurality of Hall elements and positioning mechanisms corresponding to the Hall elements. The connector 1 and the connector 2 located on the extension module are both installed on the extension mainboard. The Hall elements in the extension module are plugged into the extension mainboard and are positioned by the positioning mechanism arranged on the extension shell.

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