Intelligent photovoltaic module capable of being connected with multiple common photovoltaic modules

Abstract

The invention relates to the technical field of solar photovoltaic, and discloses an intelligent photovoltaic module capable of being connected with a plurality of common photovoltaic modules, which comprises a photovoltaic panel and an MLPE device, the photovoltaic panel comprises at least two parallel units, and any two adjacent parallel units are connected in series through a welding strip or a wire. The MLPE device is arranged on one side of the photovoltaic panel and comprises a circuit board; a control module, a group of input ends and a group of output ends are arranged on the circuit board, the control module at least comprises one of a monitor, a turn-off device, an optimizer and an inverter, and a series circuit between any two adjacent parallel units is electrically connected with the control module through a first welding strip; after the parallel units are connected in series, the positive electrode and the negative electrode of the whole are electrically connected with the control module through the second welding strip, the input end is used for being connected with other photovoltaic assemblies, and the photovoltaic assemblies are controlled by the MLPE device. According to the invention, the problem that large hidden dangers are caused to stable operation of the photovoltaic module because the number of wiring holes and joints on the photovoltaic module is large is solved.

Description

Technical Field

[0001] The present invention relates to the field of solar photovoltaic technology, and in particular to an intelligent photovoltaic component that can be connected to a plurality of common photovoltaic components. Background Art

[0002] A photovoltaic module is a device that converts photovoltaic energy into electrical energy. A photovoltaic module contains several cells that can convert light energy into electrical energy. The cells are connected in series or in parallel to output electrical energy together.

[0003] In the prior art, reference Figure 1 , multiple cells are connected in series to form a battery string, and then two battery strings are connected in parallel to form a parallel unit. Several parallel units are connected in series to form an overall photovoltaic module. The photovoltaic module generally also includes several junction boxes. Each junction box leads the positive and negative poles of each battery string and sets a diode in parallel with the battery string to prevent the hot spot effect of the photovoltaic module and reduce the mismatch power generation loss caused by battery string failure. At the same time, each set of photovoltaic modules equipped with MLPE equipment requires at least three sets of connectors to respectively realize the connection between the positive pole of the photovoltaic panel and the MLPE device, the connection between the negative pole of the photovoltaic panel and the MLPE device, and the input and output of the MLPE device itself, which poses a greater hidden danger to the stable operation of the photovoltaic module.

[0004] Reference Figure 2 Some existing smart photovoltaic module solutions use an MLPE (Module-Level Power Electronics) module integrated in the above-mentioned junction box for controlling and monitoring photovoltaic modules or battery strings, including a circuit board and a control element integrated on the circuit board for monitoring, disconnecting or adjusting power output, multiple parallel units are respectively connected to the circuit board and electrically connected to the corresponding control element, or multiple parallel units are connected in series and connected to the circuit board together, so as to control the photovoltaic module. This solution requires the provision of multiple MLPE modules corresponding to multiple battery strings, which not only increases the equipment cost, but also increases the difficulty of sampling, control and / or communication.

[0005] In addition, since the photovoltaic panels of the photovoltaic module are multi-layer structures, the cells and welding strips are sandwiched between two transparent glass panels, so it is necessary to open wiring holes on the glass panels to facilitate the lead-out of welding strips or cables, and then connect them to the control components of the MLPE device. At the same time, in order to avoid mixed lines, short circuits, etc., each wiring hole corresponds to only one set of welding strips. Figure 1 and Figure 2Each parallel unit needs a pair of wiring holes. However, the wiring holes on the glass plate and the cable connectors are prone to poor contact, water ingress, and DC arcing. The more connectors and wiring holes there are, the more likely it is to cause hidden dangers to the stable operation of photovoltaic modules. Summary of the invention

[0006] In view of this, the present invention provides an intelligent photovoltaic module that can be connected to multiple ordinary photovoltaic modules to solve the problem that there are a large number of wiring holes and connectors on the photovoltaic module, which poses a great hidden danger to the stable operation of the photovoltaic module.

[0007] The present invention provides an intelligent photovoltaic module that can be connected to multiple ordinary photovoltaic modules, including: a photovoltaic panel, including at least two parallel units, any two adjacent parallel units are connected in series through a welding strip or a wire;

[0008] The MLPE device is arranged on one side of the photovoltaic panel, and comprises a circuit board; the circuit board is provided with a control module, a group of input terminals and a group of output terminals, and the control module comprises at least one of a monitor, a switch, an optimizer and an inverter;

[0009] The series circuit between any two adjacent parallel units is electrically connected to the control module through a first welding strip. After a number of parallel units are connected in series, the positive and negative electrodes of the whole are electrically connected to the control module through a second welding strip respectively. The input end is used to connect to an external photovoltaic component, and the external photovoltaic component is controlled by the MLPE device.

[0010] Beneficial effect: The MLPE device is arranged on the photovoltaic panel, and the MLPE device is connected in series with at least one photovoltaic module through a group of input terminals, so that multiple photovoltaic panels can be monitored and controlled simultaneously through a group of MLPE devices. It should be noted that the photovoltaic module is an existing ordinary photovoltaic module. Among them, for the photovoltaic module, only one group of output terminals needs to be configured, and the output terminals are connected to the input terminals of the MLPE device. On the photovoltaic panel, the input terminal is electrically connected to the output terminal of the photovoltaic module, and then the electric energy is output through a group of output terminals. Compared with the traditional method of equipping each photovoltaic panel with a group of MLPE devices, the number of required connectors is significantly reduced.

[0011] In addition, since the MLPE device is arranged on one side of the photovoltaic panel, that is, the circuit board of the MLPE device is arranged on one side of the photovoltaic panel, and the parallel unit is electrically connected to the control module on the circuit board by the first welding strip, the number of joints required for connecting the photovoltaic panel with the external independent MLPE device is reduced. Since each group of parallel units on the photovoltaic panel is electrically connected to the control module by the first welding strip, compared with the method of electrically connecting each group of parallel units to the control unit in the prior art, the number of wiring holes required to be opened on the glass plate is greatly reduced, thereby reducing the risk of poor contact, water ingress and DC arc.

[0012] In an optional embodiment, the MLPE device further includes a plurality of bypass diodes, the number of which is the same as the number of the parallel units; the plurality of bypass diodes are all arranged on the circuit board and are sequentially connected in series, and a connection point is provided between any two adjacent bypass diodes;

[0013] After the plurality of parallel units are connected in series, the positive pole of the whole is electrically connected to the cathode of the series circuit composed of the plurality of bypass diodes, the negative pole of the whole is electrically connected to the anode of the series circuit composed of the plurality of bypass diodes, and the plurality of the first welding strips are electrically connected to different wiring points one by one.

[0014] Beneficial effect: by setting a plurality of bypass diodes and setting the bypass diodes in series on the circuit board, and then connecting the corresponding parallel units in parallel to the corresponding bypass diodes, when the battery panels of one or some of the parallel units fail during the operation of the battery panel, the corresponding battery strings on the failed parallel units can be bypassed, thereby avoiding the output efficiency of the entire photovoltaic panel being affected by the failure of a few battery panels, thereby improving the reliability of the system. At the same time, since the bypass diodes are concentrated in series on the circuit board, the welding strips connected to the bypass diodes can be concentratedly led out from the wiring holes close to the circuit board, thereby reducing the number of wiring holes required on the glass plate and reducing the length of the connecting cables required outside the glass plate, further reducing the risks of poor contact, water ingress, arcing and short circuit.

[0015] In an optional embodiment, the control module further includes a bypass unit, and the bypass unit is configured to isolate the faulty battery string from the entire series circuit composed of several parallel units when a battery string in the parallel unit fails.

[0016] Beneficial effect: By building a bypass unit into the control module, the bypass unit can directly control each parallel unit electrically connected to the control module, so that when one or some battery strings in the parallel unit fail, the corresponding battery strings can be bypassed in time to avoid affecting the output efficiency of the overall photovoltaic panel. At the same time, the setting of the bypass unit eliminates the need to install additional bypass diodes on the circuit board, thereby simplifying the component layout on the circuit board and reducing hardware costs.

[0017] In an optional implementation, the bypass unit includes a plurality of built-in diodes, and the plurality of built-in diodes are respectively connected in parallel with different parallel connection units.

[0018] Beneficial effect: Through multiple built-in diodes, the bypass unit can realize the function of bypass isolation of the faulty battery string, providing a bypass control method different from directly setting the bypass diode on the circuit board.

[0019] In an optional embodiment, the photovoltaic panel includes a first glass plate and a second glass plate arranged in parallel and opposite to each other, the parallel unit, the first welding strip, and the second welding strip are all arranged between the first glass plate and the second glass plate, and a plurality of wiring holes are opened on the first glass plate, and any one of the first welding strip or the second welding strip corresponds to one of the wiring holes.

[0020] Beneficial effect: The parallel unit is arranged between the first glass plate and the second glass plate. The interlayer space formed by the first glass plate and the second glass plate isolates the parallel unit from the external environment, thereby protecting the parallel unit. The wiring hole serves as a channel connecting the interlayer space with the outside world, and provides a connection channel for the electrical connection between the MLPE device and each parallel unit. Since the number of wiring holes is the same as the total number of the first welding strip and the second welding strip, the first welding strip first connects the parallel units in series and then connects to the circuit board through the wiring holes, thereby reducing the number of wiring holes, thereby reducing the risks of poor contact, water ingress and DC arc.

[0021] In an optional embodiment, the MLPE device is fixed on the surface of the first glass plate; the first welding strip or the second welding strip is welded to the cable at the corresponding wiring hole and connected to the circuit board through the cable.

[0022] Beneficial effect: The first welding strip and the second welding strip are connected to the circuit board through the wiring hole by cables, and the cables replace the first welding strip or the second welding strip body to pass through the wiring hole, thereby reducing the diameter of the required wiring hole and further reducing the possibility of water ingress.

[0023] In an optional embodiment, the plurality of wiring holes are arranged in the area covered by the MLPE device, and the first welding strip and the second welding strip are directly electrically connected to the circuit board inside the MLPE device through the corresponding wiring holes.

[0024] Beneficial effect: Several parallel units are connected in series and then electrically connected to the control module, so that the same control module can uniformly control several parallel units at the same time, saving the amount of hardware used and the overall cost of photovoltaic components.

[0025] In an optional embodiment, several battery strings in the upper half of the smart photovoltaic component are connected in series in sequence to form an upper half area, and several battery strings in the lower half of the smart photovoltaic component are connected in series in sequence to form a lower half area, and each battery string in the upper half area is respectively connected in parallel with each battery string in the lower half area; the parallel connecting wires are welded to one end of the first welding strip, and the other end of the first welding strip is electrically connected to the control module.

[0026] Beneficial effect: Through the above connection method, there is only one welding point between the first welding strip and the wire, which reduces the number of welding points.

[0027] In an optional implementation, the control module includes a control unit, and the multiple parallel units of the photovoltaic panel are connected in series with the external photovoltaic assembly and are connected to the control unit as a whole; or,

[0028] The control module includes two control units, the multiple parallel units of the photovoltaic panel are connected to the first control unit, the external photovoltaic assembly is connected to the second control unit, and the first control unit is connected in series with the second control unit.

[0029] Beneficial effects: The control module includes a control unit, and its multiple parallel units are connected in series with external photovoltaic components and then connected to the control unit as a whole; the same control module can simultaneously control several parallel units in a unified manner, saving the amount of hardware used and the overall cost of photovoltaic components.

[0030] In some other embodiments, the control module includes two control units, multiple parallel units of the control module are connected to the first control unit, and the external photovoltaic assembly is connected to the second control unit, and the first control unit and the second control unit are connected in series. The first control unit controls the photovoltaic panel separately, and the second control unit controls the external photovoltaic panel separately, so as to achieve more refined control.

[0031] In an optional implementation, the control module is provided with a power carrier communication module for communicating with other devices via a power line.

[0032] Beneficial effect: Since the control module is provided with a power carrier communication module, the control module on the photovoltaic component can transmit its own operating data to the monitoring center of the power station in a timely manner through the power carrier communication module, so that the operation and maintenance personnel can grasp the working status of the photovoltaic component in real time, which is convenient for the refined management of the entire photovoltaic power station. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 It is a schematic diagram of the cooperation between the photovoltaic panel and the external independent MLPE device in the background technology;

[0035] Figure 2 A schematic diagram of a photovoltaic panel equipped with an intelligent junction box in the background technology;

[0036] Figure 3 This is a schematic diagram of the overall structure of an intelligent photovoltaic module that can be connected to multiple ordinary photovoltaic modules according to an embodiment of the present invention;

[0037] Figure 4 for Figure 3 A is a partial enlarged schematic diagram;

[0038] Figure 5 A schematic diagram of the structure of another smart photovoltaic assembly according to an embodiment of the present invention;

[0039] Figure 6 A schematic diagram of the structure of another smart photovoltaic assembly according to an embodiment of the present invention;

[0040] Figure 7 It is a schematic diagram of the structure of another intelligent photovoltaic assembly according to an embodiment of the present invention.

[0041] Description of reference numerals:

[0042] 100, photovoltaic panel; 101, wiring hole; 201, parallel unit; 300, MLPE device; 301, circuit board; 302, control module; 401, first welding strip; 402, second welding strip; 403a, welding point; 501, bypass diode; 600, photovoltaic module; 700, connector. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0044] Combine the following Figures 3 to 7 , describing an embodiment of the present invention.

[0045] According to an embodiment of the present invention, Figure 3 As shown, a smart photovoltaic assembly that can be connected to multiple ordinary photovoltaic assemblies is provided, including: a photovoltaic panel 100 and an MLPE device 300. The photovoltaic panel 100 includes at least two parallel units 201, and any two adjacent parallel units 201 are connected in series through welding strips or wires. The MLPE device 300 is arranged on one side of the photovoltaic panel 100, including a circuit board 301; the circuit board 301 is provided with a control module 302, a group of input terminals and a group of output terminals, and the control module 302 includes at least one of a monitor, a switch, an optimizer and an inverter. The series circuit between any two adjacent parallel units 201 is electrically connected to the control module 302 through a first welding strip 401, and the positive and negative electrodes of the whole after the parallel units 201 are connected in series are electrically connected to the control module 302 through a second welding strip 402, respectively, and the input terminal is used to connect to an external photovoltaic assembly 600, and the external photovoltaic assembly 600 is controlled by the MLPE device 300.

[0046] like Figure 3 As shown, in this embodiment, the MLPE device 300 is arranged on the photovoltaic panel 100, and the MLPE device 300 is connected in series with at least one external photovoltaic component 600 through a group of input terminals, so as to realize simultaneous monitoring and control of multiple photovoltaic panels through a group of MLPE devices 300. It should be noted that the external photovoltaic component 600 is an existing ordinary photovoltaic component. Among them, for the external photovoltaic component 600, only one group of output terminals needs to be configured, and the output terminals are connected to the input terminals of the MLPE device 300. On the photovoltaic panel 100, the input terminal is electrically connected to the output terminal of the external photovoltaic component 600, and then the electric energy is output through a group of output terminals. Compared with the traditional method of equipping each photovoltaic panel with an external independent MLPE device, the number of required connectors 700 is significantly reduced.

[0047] In addition, since the MLPE device 300 is arranged on one side of the photovoltaic panel, that is, the circuit board 301 of the MLPE device 300 is arranged on one side of the photovoltaic panel, and the parallel unit 201 is electrically connected to the control module 302 on the circuit board 301 by the first welding strip 401, the number of connectors required to connect the photovoltaic panel to the external independent MLPE device is reduced. Since each group of parallel units 201 on the photovoltaic panel is electrically connected to the control module 302 by the first welding strip 401, compared with the method of electrically connecting each group of parallel units 201 to the control unit in the prior art, the number of wiring holes 101 required to be opened on the glass plate is greatly reduced, thereby reducing the risk of poor contact, water ingress and DC arc.

[0048] In addition, specifically, the parallel unit 201 is formed by at least two battery strings connected in parallel, and each battery string is formed by a plurality of battery cells connected in series. The above embodiment does not limit the number of battery strings constituting the parallel unit 201. The MLPE device 300 includes a circuit board 301, and the control module 302 is arranged on one side of the photovoltaic panel 100 with the circuit board 301 as a carrier. Specifically, the circuit board 301 is arranged on one side of the photovoltaic panel 100 by welding, bonding or connecting with a fixing member. The control module 302 can be configured as a monitor, a switch and an inverter, and can also be configured as an optimizer and an inverter. Its specific form can be selected according to actual needs.

[0049] like Figure 3 and Figure 4 As shown, in one embodiment, the MLPE device 300 further includes a bypass diode 501, and the number of the bypass diodes 501 is the same as the number of the parallel units 201. The bypass diodes 501 are all arranged on the circuit board 301 and connected in series in sequence, and a connection point is arranged between any two adjacent bypass diodes 501. The positive electrode of the whole after the parallel units 201 are connected in series is electrically connected to the cathode of the whole series circuit composed of the bypass diodes 501, and the negative electrode of the whole after the parallel units 201 are connected in series is electrically connected to the anode of the whole series circuit composed of the bypass diodes 501, and the first welding strips 401 are electrically connected to different connection points one by one.

[0050] It should be noted that in the above embodiments, the connection point does not specifically refer to a certain structure, and the connection point can be any point between the cathode and the anode that can achieve connection with the welding strip.

[0051] like Figure 4As shown, in this embodiment, a plurality of bypass diodes 501 are provided, and the bypass diodes 501 are provided in series on the circuit board 301, and then the corresponding parallel units 201 are respectively connected in parallel at the corresponding bypass diodes 501, so that when the battery panels of one or some of the parallel units 201 fail during the operation of the battery panel, the corresponding battery strings on the failed parallel units 201 are bypassed, so as to avoid affecting the output efficiency of the entire photovoltaic panel 100 due to the failure of a few battery panels, thereby improving the reliability of the system. At the same time, since the bypass diodes 501 are concentrated in series on the circuit board 301, the welding strips connected to the bypass diodes 501 can be concentratedly led out from the wiring holes 101 close to the position of the circuit board 301, thereby reducing the number of wiring holes 101 required on the glass plate, and reducing the length of the connecting cable required outside the glass plate, further reducing the risks of poor contact, water ingress, arcing, and short circuit.

[0052] In addition, specifically, in the above embodiment, the relationship between the number n of wiring holes 101 and the number a of parallel units 201 is n=(a-1)+2=a+1, which is less than the number n=2a of wiring holes 101 in the related art, and as the total number of parallel units 201 on the photovoltaic panel 100 increases, the number of wiring holes 101 in the above embodiment is reduced more significantly than that in the related art.

[0053] In one embodiment, the control module 302 further includes a bypass unit, which is configured to isolate the faulty battery string from the entire series circuit composed of several parallel units 201 when a battery string in the parallel unit 201 fails.

[0054] In this embodiment, a bypass unit is built into the control module 302, so that the bypass unit can directly control each parallel unit 201 electrically connected to the control module 302, so that when a certain battery string or certain battery strings in the parallel unit 201 fail, the corresponding battery strings can be bypassed in time to avoid affecting the output efficiency of the entire photovoltaic panel 100. At the same time, the setting of the bypass unit eliminates the need to install an additional bypass diode 501 on the circuit board 301, thereby simplifying the component layout on the circuit board 301 and reducing hardware costs.

[0055] In one embodiment, the bypass unit includes a plurality of built-in diodes, and the plurality of built-in diodes are respectively connected in parallel with different parallel connection units 201 .

[0056] In this embodiment, a plurality of built-in diodes are used to realize the bypass isolation function of the faulty battery string for the bypass unit, providing a bypass control method different from directly setting the bypass diode 501 on the circuit board 301 .

[0057] In one embodiment, the photovoltaic panel 100 includes a first glass plate and a second glass plate arranged in parallel and opposite to each other, the parallel unit 201, the first welding strip 401, and the second welding strip 402 are all arranged between the first glass plate and the second glass plate, and a plurality of wiring holes 101 are opened on the first glass plate, and any first welding strip 401 or second welding strip 402 corresponds to a wiring hole 101.

[0058] Specifically, the first glass plate can be a glass plate on any side of the photovoltaic panel 100, that is, it can be a glass plate on the upper side of the photovoltaic panel 100 or a glass plate on the lower side of the photovoltaic panel 100. In this embodiment, the first glass plate is located on the lower side of the photovoltaic panel 100, and the MLPE device 300 is installed on the lower side of the first glass plate.

[0059] In this embodiment, the parallel unit 201 is arranged between the first glass plate and the second glass plate. The interlayer space formed by the first glass plate and the second glass plate isolates the parallel unit 201 from the external environment, thereby protecting the parallel unit 201. The wiring hole 101 serves as a channel connecting the interlayer space with the outside world, and provides a connection channel for the electrical connection between the MLPE device 300 and each parallel unit 201. Since the number of wiring holes 101 is the same as the total number of the first welding strips 401 and the second welding strips 402, and the first welding strip 401 first connects the parallel units 201 in series and then connects to the circuit board 301 through the wiring holes 101, the number of wiring holes 101 is reduced, thereby reducing the risks of poor contact, water ingress and DC arc.

[0060] In one embodiment, the MLPE device 300 is fixed on the surface of the first glass plate. The first welding strip 401 or the second welding strip 402 is welded to the cable at the corresponding wiring hole 101, and connected to the circuit board 301 through the cable. In this embodiment, since the MLPE device 300 is fixed on the surface of the photovoltaic panel 100, the length of the cable lead-out is reduced, and the risk of short circuit, DC arc and other defects caused by cable damage is further reduced.

[0061] In this embodiment, the first welding strip 401 and the second welding strip 402 are led out from the wiring hole 101 by cables and connected to the circuit board 301. The cables replace the first welding strip 401 or the second welding strip 402 body passing through the wiring hole 101, thereby reducing the required diameter of the wiring hole 101 and further reducing the possibility of water ingress.

[0062] In one embodiment, the control module 302 includes a control unit, and the multiple parallel units 201 of the photovoltaic panel 100 are connected in series with the external photovoltaic assembly 600 and connected to the control unit as a whole; so that the same control unit can simultaneously control the photovoltaic panel 100 and the external photovoltaic assembly 600, saving the number of hardware used and the overall cost of the photovoltaic assembly. Figure 5As shown, the number of the external photovoltaic components 600 may also be multiple, and the multiple external photovoltaic components 600 are connected in series and then connected to the input end of the MLPE device 300 .

[0063] In some other embodiments, the control module 302 includes two control units, multiple parallel units 201 of the photovoltaic panel 100 are connected to the first control unit, and the external photovoltaic assembly 600 is connected to the second control unit, and the first control unit and the second control unit are connected in series. The first control unit controls the photovoltaic panel 100 separately, and the second control unit controls the external photovoltaic assembly 600 separately, so as to achieve more refined control.

[0064] In one embodiment, Figure 6 As shown, several battery strings in the upper part of the smart photovoltaic assembly are connected in series to form an upper half area, and several battery strings in the lower part of the smart photovoltaic assembly are connected in series to form a lower half area, and each battery string in the upper half area is connected in parallel with each battery string in the lower half area. The parallel connection wire is welded to one end of the first welding strip 401, and the other end of the first welding strip 401 is electrically connected to the control module 302.

[0065] In this embodiment, through the above connection method, there is only one welding point 403a between the first welding strip 401 and the wire, which reduces the number of welding points. Figure 4 In the embodiment, two welding points are required on the left side of the first welding strip 401, which are respectively welded to the two parallel units.

[0066] Specifically, Figure 6 As shown, one end of the cable 601 is a male connector 700a, and the other end is a female connector 700b. The male connector of each photovoltaic module is connected to the female connector of another adjacent photovoltaic module. In this embodiment, since the two wiring holes 101a and 101b are not covered by the MLPE module, junction boxes 102a and 102b are required at both wiring holes for dust and water resistance; at the same time, a section of cable 602a and 602b is also required to connect the second welding strips 402a and 402b to the control module 302, and the cables 602a and 602b are exposed to the external environment, and there is a risk of line aging and unsightly appearance.

[0067] like Figure 7As shown, in one embodiment, all wiring holes 101 are arranged in the area covered by the MLPE device 300, and the wiring holes 101a and 101b are located under the MLPE device 300, so that the second welding strips 402a and 402b can directly extend to the bottom of the MLPE device 300, directly enter the interior of the MLPE device 300 and electrically connect with the control module 302. In this way, the cables exposed to the external environment are reduced, and the welding process between the second welding strips 402a and 402b and the cables is also reduced, thereby further optimizing the manufacturing process. It should be noted that Figure 6 The second welding strip 402a intersects with the wire, but in fact the two are not in contact. Since the photovoltaic panel has a multi-layer structure, the wire and the welding strip can be set at different levels; or an insulating layer can be set separately at the intersection of the two to avoid short circuit of the battery string.

[0068] In one embodiment, a power line carrier communication module is provided on the control module 302 , and the power line carrier communication module is used to communicate with other devices through a power line.

[0069] In this embodiment, since the control module 302 is provided with a power carrier communication module, the control module 302 on the photovoltaic component can transmit its own operating data to the monitoring center of the power station in a timely manner through the power carrier communication module, so that the operation and maintenance personnel can grasp the working status of the photovoltaic component in real time, which is convenient for the refined management of the entire photovoltaic power station.

[0070] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A smart photovoltaic module that can be connected to multiple ordinary photovoltaic modules, characterized in that: include: A photovoltaic panel (100) comprises at least two parallel units (201), wherein any two adjacent parallel units (201) are connected in series via a welding strip or a wire; The MLPE device (300) is arranged on one side of the photovoltaic panel (100), and comprises a circuit board (301); a control module (302), a group of input terminals and a group of output terminals are arranged on the circuit board (301); the control module (302) comprises at least one of a monitor, a switch, an optimizer and an inverter; The series circuit between any two adjacent parallel units (201) is electrically connected to the control module (302) via a first welding strip (401); the positive pole and the negative pole of a plurality of parallel units (201) connected in series are electrically connected to the control module (302) via a second welding strip (402); the input end is used to connect to an external photovoltaic component (600); and the external photovoltaic component (600) is controlled by the MLPE device (300).

2. The intelligent photovoltaic module that can be connected to multiple common photovoltaic modules according to claim 1, characterized in that: The MLPE device (300) further comprises a plurality of bypass diodes (501), the number of the bypass diodes (501) being the same as the number of the parallel units (201); the plurality of bypass diodes (501) are all arranged on the circuit board (301) and are sequentially connected in series, and a connection point is arranged between any two adjacent bypass diodes (501); After the plurality of parallel units (201) are connected in series, the positive pole of the whole is electrically connected to the cathode of the whole series circuit formed by the plurality of bypass diodes (501); after the plurality of parallel units (201) are connected in series, the negative pole of the whole is electrically connected to the anode of the whole series circuit formed by the plurality of bypass diodes (501); and the plurality of first welding strips (401) are electrically connected to different wiring points in a one-to-one correspondence.

3. The intelligent photovoltaic module that can be connected to multiple common photovoltaic modules according to claim 1, characterized in that: The control module (302) further comprises a bypass unit, wherein the bypass unit is configured to isolate the failed battery string from the entire series circuit composed of several parallel units (201) when a battery string in the parallel unit (201) fails.

4. The intelligent photovoltaic module that can be connected to multiple common photovoltaic modules according to claim 3, characterized in that: The bypass unit comprises a plurality of built-in diodes, and the plurality of built-in diodes are respectively connected in parallel with different parallel connection units (201).

5. The intelligent photovoltaic module that can be connected to multiple common photovoltaic modules according to any one of claims 1 to 4, characterized in that: The photovoltaic panel (100) comprises a first glass plate and a second glass plate which are arranged parallel to each other. The parallel unit (201), the first welding strip (401), and the second welding strip (402) are all arranged between the first glass plate and the second glass plate. A plurality of wiring holes (101) are provided on the first glass plate, and any one of the first welding strip (401) or the second welding strip (402) corresponds to one of the wiring holes (101).

6. The intelligent photovoltaic module that can be connected to multiple common photovoltaic modules according to claim 5, characterized in that: The MLPE device (300) is fixed on the surface of the first glass plate; the first welding strip (401) or the second welding strip (402) is welded to a cable at the corresponding wiring hole (101) and connected to the circuit board (301) via the cable.

7. The intelligent photovoltaic module that can be connected to multiple common photovoltaic modules according to claim 5, characterized in that: The plurality of wiring holes (101) are arranged in the area covered by the MLPE device (300), and the first welding strip (401) and the second welding strip (402) are electrically connected directly to the circuit board (301) inside the MLPE device (300) through the corresponding wiring holes (101).

8. An intelligent photovoltaic module that can be connected to multiple common photovoltaic modules according to any one of claims 1 to 4, characterized in that: A plurality of battery strings in the upper part of the smart photovoltaic assembly are sequentially connected in series to form an upper half area, and a plurality of battery strings in the lower part of the smart photovoltaic assembly are sequentially connected in series to form a lower half area, and each battery string in the upper half area is respectively connected in parallel with each battery string in the lower half area; the parallel connection wire is welded to one end of the first welding strip (401), and the other end of the first welding strip (401) is electrically connected to the control module (302).

9. A smart photovoltaic module that can be connected to multiple common photovoltaic modules according to any one of claims 1 to 4, characterized in that: The control module (302) comprises a control unit, and the plurality of parallel units (201) of the photovoltaic panel (100) and the external photovoltaic assembly (600) are connected in series and then connected to the control unit as a whole; or, The control module (302) comprises two control units, the multiple parallel units (201) of the photovoltaic panel (100) are connected to the first control unit, the external photovoltaic assembly (600) is connected to the second control unit, and the first control unit is connected in series with the second control unit.

10. An intelligent photovoltaic module that can be connected to multiple common photovoltaic modules according to any one of claims 1 to 4, characterized in that: The control module (302) is provided with a power carrier communication module for communicating with other devices via a power line.

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