Method for adaptive modification of electrical injection parameters of a photovoltaic module and system therefor

Abstract

The application discloses a photovoltaic module electric injection parameter adaptive modification method and system, and the method comprises the following steps: obtaining traceability information, wherein the traceability information comprises a bar code; sending the traceability information to a manufacturing execution system (MES); obtaining module information corresponding to the traceability information by the MES, wherein the module information comprises a module version and an efficiency grade; obtaining the module information, inputting electric injection parameters at an equipment end according to the module information, wherein the electric injection parameters comprise an injection current and an injection time; and performing electric injection according to the electric injection parameters; and the application can identify the module information through the traceability information, automatically modify the electric injection parameters according to the module information, and maximize the electric injection gain without manual intervention.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic, more particularly, to a photovoltaic module electric injection parameter adaptive modification method and system thereof. BACKGROUND

[0002] Light decay is one of the important performance indicators of battery product reliability, and early light decay of solar cells will lead to power reduction and cause hot spot effect. LeTID is a common phenomenon in photovoltaic materials, and according to the LeTID / LID model, hydrogen will transfer between B1 (temporary storage of defect precursor), B2 (defect precursor) and B3 (defect formation) during the annealing process in a rapid annealing furnace, forming dislocation defects. The main way to repair such defects is electric injection, which can regulate the valence state and distribution of hydrogen in the solar cell through electricity, and achieve the passivation of defects and impurities.

[0003] The factors affecting the electric injection of the module end include injection time, injection current, temperature and cell efficiency grade. In the actual production process of the module, the efficiency grade of the cell is getting higher and higher, and the efficiency grade is variable in the actual production of the module. Only the injection parameters of the existing best efficiency grade can be used, and it is inevitable that the maximum gain of the module cannot be met, so it is a technical problem to be solved in the field. SUMMARY

[0004] Therefore, the present application provides a photovoltaic module electric injection parameter adaptive modification method to solve the problem that the prior art cannot meet the maximum gain of the module.

[0005] In a first aspect, the present application provides a photovoltaic module electric injection parameter adaptive modification method, comprising the following steps:

[0006] Obtain traceability information, wherein the traceability information includes a bar code, and send the traceability information to a manufacturing execution system (MES);

[0007] The manufacturing execution system (MES) obtains module information corresponding to the traceability information, and the module information includes a module version and an efficiency grade;

[0008] Obtain the module information, input the electric injection parameters at the device end according to the module information, and the electric injection parameters include an injection current and an injection time;

[0009] Electric injection is performed according to the electric injection parameters.

[0010] In a second aspect, the present application provides a photovoltaic module electric injection parameter adaptive modification system, comprising:

[0011] A traceability information acquisition module is coupled with a cell acquisition module and is used to obtain traceability information, wherein the traceability information includes a bar code, and the traceability information is sent to a manufacturing execution system (MES);

[0012] The battery piece acquisition module is coupled with the traceability information acquisition module and the electrical injection parameter module respectively, and is used for executing the manufacturing execution system (MES) to acquire component information corresponding to the traceability information, wherein the component information includes a component version and an efficiency grade.

[0013] The electrical injection parameter module is coupled with the battery piece acquisition module and the electrical injection respectively, and is used for acquiring the component information, inputting electrical injection parameters according to the component information at the equipment end, wherein the electrical injection parameters include an injection current and an injection time.

[0014] The electrical injection module is used for performing electrical injection according to the electrical injection parameters.

[0015] Compared with the prior art, the photovoltaic module electrical injection parameter adaptive modification method and system provided by the present application at least achieve the following beneficial effects:

[0016] The photovoltaic module electrical injection parameter adaptive modification method provided by the present application includes: acquiring traceability information, wherein the traceability information includes a bar code; and sending the traceability information to a manufacturing execution system (MES). The manufacturing execution system (MES) acquires component information corresponding to the traceability information, wherein the component information includes a component version and an efficiency grade. The component information is acquired, and electrical injection parameters are input at the equipment end according to the component information, wherein the electrical injection parameters include an injection current and an injection time. Electrical injection is performed according to the electrical injection parameters. Through the above scheme, the component information is identified through the traceability information, the electrical injection parameters are automatically modified according to the component information, the electrical injection gain is maximized, and manual intervention is not required.

[0017] Of course, implementing any product of the present application does not necessarily need to achieve all the technical effects described above at the same time.

[0018] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings incorporated in and forming a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application.

[0020] Figure 1 is a flowchart of a photovoltaic module electrical injection parameter adaptive modification method provided by the present application;

[0021] Figure 2 is a logic block diagram of a controller, a control panel, a scanning identifier and a manufacturing execution system (MES) provided by the present application;

[0022] Figure 3is a structural schematic view of a laminated piece provided by the present application;

[0023] Figure 4 is a structural schematic view of a cooling cavity provided by the present application;

[0024] Figure 5 is a circuit schematic view of an electrical injection of a photovoltaic module provided by the present application;

[0025] Figure 6 is a structural schematic view of a photovoltaic module electrical injection parameter adaptive modification system provided by the present application;

[0026] Figure 7 is a data acquisition schematic diagram of each process provided by the present application. DETAILED DESCRIPTION

[0027] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions, and numerical values set forth in these embodiments are not limiting to the scope of the present application unless otherwise specifically stated.

[0028] The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the scope of the application its application or uses.

[0029] Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail herein. However, where appropriate, such techniques, methods, and devices can be viewed as part of the specification and can be claimed as such.

[0030] In all of the compositions and methods shown and discussed herein, any specific values should be interpreted as merely exemplary, and are not to be interpreted as a limitation thereon. Thus, other examples of the exemplary embodiments can have different values.

[0031] It should be noted that like references and characters herein relate to like items throughout the figures, and once an item is defined in one figure, it need not be discussed further in subsequent figures.

[0032] Referring to Figures 1-3 shown, Figure 1 is a flowchart of a photovoltaic module electrical injection parameter adaptive modification method provided by the present application; Figure 2 is a logic block diagram of a controller, control panel, scanning identifier, and manufacturing execution system (MES) provided by the present application; Figure 3 is a structural schematic view of a laminated piece provided by the present application. The present embodiment provides a photovoltaic module electrical injection parameter adaptive modification method, comprising the following steps:

[0033] S1 acquires traceability information, wherein the traceability information includes a barcode, and sends the traceability information to a manufacturing execution system (MES) 2;

[0034] Specifically, in the production process of the photovoltaic module, each photovoltaic module has corresponding traceability information, such as a barcode attached to the side of the glass away from the back plate or the side of the back plate away from the glass. The device end 1 can acquire the traceability information and feed back the traceability information acquired by the device end 1 to the manufacturing execution system (MES) 2.

[0035] Continuing to refer to Figure 3 As shown in the figure, the photovoltaic module 4 includes a laminated part 41 and a frame, the frame is wrapped around the circumferential edge of the laminated part 41, and the laminated part 41 includes a front cover plate 410, a first encapsulation adhesive film 411, a cell string 412, a second encapsulation adhesive film 413, and a back cover plate 414 arranged in layers. The cell string 412 is connected by a plurality of cell pieces, the front cover plate 410 can be glass, the back cover plate 414 can be glass or back plate, and the first encapsulation adhesive film 411 and the second encapsulation adhesive film 413 can be ethylene-vinyl acetate copolymer (EVA) adhesive film, polyethylene octene copolymer elastomer (POE) adhesive film, or polyethylene terephthalate (PET) adhesive film. EVA (ethylene-vinyl acetate copolymer) has excellent bonding performance, low melting temperature, good melt flowability and softness, lower cost, easy construction, and other advantages. The EVA material can reduce high crystallinity, improve toughness, impact resistance, filler compatibility, and heat sealing performance due to the introduction of vinyl acetate monomer in the molecular chain. POE (random copolymer elastomer of ethylene and high-carbon alpha-olefin); the molecular structure of POE material has excellent mechanical properties, rheological properties, and ultraviolet resistance, and also has good affinity with polyolefins, good low-temperature toughness, and high performance-price ratio. PVB (polyvinyl butyral) material is soluble in methanol, ethanol, ketones, halogenated alkanes, aromatic hydrocarbon solvents, has good compatibility with phthalate esters, sebacate ester benzene plasticizers, nitrocellulose, phenolic resin, epoxy resin, etc., has high transparency, cold resistance, impact resistance, and ultraviolet radiation resistance, and has good adhesion to metals, glass, wood, ceramics, and fiber products. The cell piece can be PERC (Passivated Emitter Rear Cell), TOPCon (Tunnel Oxide Passivated Contact), HJT (Heterojunction with Intrinsic Thin-film), IBC (Interdigitated Back Contact), perovskite, etc.

[0036] A manufacturing execution system (MES) is a production information management system for the execution layer of a manufacturing enterprise workshop, used to monitor and control the production process of the workshop. The main purpose of the manufacturing execution system MES2 is to track and record the transformation of raw materials to finished products in real time, which captures data from various sources (including machines, sensors and operators) to provide accurate and up-to-date information about the status of production activities.

[0037] S2 The manufacturing execution system MES2 acquires component information corresponding to the traceability information, and the component information includes component version and efficiency grade;

[0038] Specifically, the manufacturing execution system MES2 acquires component information corresponding to the traceability information, and the manufacturing execution system MES2 queries the component information corresponding to the traceability information in the manufacturing execution system MES2 according to the acquired component information corresponding to the traceability information. The manufacturing execution system MES2 feeds back to the device end 1 (such as the photovoltaic component's electrical injection device) according to the queried component information corresponding to the traceability information, the component information includes component version and efficiency grade, and the component version refers to the comprehensive design of the outer dimensions, output power and arrangement layout of the battery component and other factors. The efficiency grade can be the efficiency grade of the battery sheet.

[0039] It should be noted that: the efficiency grade of the battery sheet is a classification method for the performance of the solar battery sheet. According to the efficiency value of the battery sheet, it is divided into different grades, which helps to ensure that the quality and performance of the battery sheet meet the needs of specific applications. The setting of the efficiency grade of the battery sheet takes into account the conversion efficiency of the battery sheet, which is an important indicator of the ability of the battery sheet to convert solar energy into electrical energy. By grading the battery sheet according to the efficiency value, it can ensure that the battery sheet used in different application scenarios has appropriate performance level. Specifically, the efficiency grade of the battery sheet is defined according to the range of its conversion efficiency. For example, a high-efficiency battery sheet may be classified as a high-efficiency grade, while a battery sheet with lower efficiency may be classified as a lower efficiency grade. This classification not only helps to ensure the quality and performance of the battery sheet, but also meets the needs of different customers and applications.

[0040] The battery sheet / N183R / B20 / / 2500 has 4 strings to distinguish different meanings, among which the 2nd string: N183R represents the component version 183 micro-rectangular; the 3rd string: B20 represents the main grid number of the battery sheet; the 4th string: 2500 represents the 25.0% efficiency grade.

[0041] S3 Acquire component information, input electrical injection parameters according to component information at device end 1, electrical injection parameters include injection current and injection time.

[0042] Specifically, the device end 1 receives the component information fed back by the execution manufacturing system MES 2, and inputs the electrical injection parameters according to the component information fed back by the execution manufacturing system MES 2, the electrical injection parameters including an injection current and an injection time.

[0043] Optionally, the injection current includes a start time of the injection current, an upper limit of the injection current, and a lower limit of the injection current, the injection time includes an upper limit of the injection time and a lower limit of the injection time, and the electrical injection parameters further include an upper limit of a voltage and a lower limit of the voltage. For example, the injection time corresponding to the component version N1822430 is set to 10s, the current is set to 15A, the upper limit of the current is 20A, the lower limit of the current is 13A, the upper limit of the voltage is 60V, the lower limit of the voltage is 0V, and the start delay is 0.

[0044] Optionally, the injection current ranges from 5A to 20A, and the injection time is not more than 200S.

[0045] S4 performs electrical injection according to the electrical injection parameters.

[0046] Specifically, the electrical injection is performed according to the electrical injection parameters (such as the injection current and the injection time), the electrical injection refers to placing the photovoltaic module 4 in an electrical injection device, applying a forward bias to the photovoltaic module 4 at a certain temperature to form carrier injection, and the electrical injection can reduce the light-induced degradation of the photovoltaic module 4, repair defects, and improve the power generation of the photovoltaic module 4.

[0047] Compared with the prior art, the photovoltaic module 4 electrical injection parameter adaptive modification method provided by the embodiment at least has the following beneficial effects:

[0048] The photovoltaic module 4 electrical injection parameter adaptive modification method provided by the embodiment includes: obtaining traceability information, wherein the traceability information includes a bar code, and sending the traceability information to the execution manufacturing system MES 2; the execution manufacturing system MES 2 obtains component information corresponding to the traceability information, the component information including a component version and an efficiency grade; obtaining the component information, inputting the electrical injection parameters according to the component information at the device end 1, the electrical injection parameters including an injection current and an injection time; and performing electrical injection according to the electrical injection parameters. By using the above scheme, the component information is identified through the traceability information, the electrical injection parameters are automatically modified according to the component information, the electrical injection gain is maximized, and manual intervention is not required.

[0049] In an alternative embodiment, the device end 1 comprises a scanning recognizer 12, a control panel 14 and a controller 13, the scanning recognizer 12 and the control panel 14 are respectively electrically connected with the controller 13, the controller 13 is configured with an application data dictionary, the scanning recognizer 12 is used for identifying a bar code, and the control panel 14 is used for inputting electrical injection parameters; the controller 13 acquires the bar code and uploads the bar code to the manufacturing execution system MES 2, the manufacturing execution system MES 2 transmits component information corresponding to the bar code to the controller 13; according to the component version and the efficiency grade, the controller 13 calls the electrical injection parameters corresponding to the application data dictionary, and sends the electrical injection parameters to the control panel 14.

[0050] Specifically, continuing to refer to FIGS. 1, 2 and 3, Figure 1 and Figure 2 The device end 1 comprises a scanning recognizer 12, a control panel 14 and a controller 13, the scanning recognizer 12 and the controller 13 are electrically connected, and the control panel 14 and the controller 13 are electrically connected, the scanning recognizer 12 scans the traceability information of the photovoltaic module 4 (such as the side of the glass away from the back plate, or the side of the back plate away from the glass), the controller 13 acquires the traceability information and uploads the traceability information to the manufacturing execution system MES 2, the manufacturing execution system MES 2 acquires the traceability information first, according to the traceability information, the manufacturing execution system MES 2 calls component information, the component information comprises a component version and an efficiency grade, and feeds back the component information (such as the component version and the efficiency grade) corresponding to the traceability information to the controller 13; the controller 13 is configured with an application data dictionary, such as a formula library, in Python, a dictionary is a series of key-value pairs, each key is associated with a value, and the key can be used to access the value associated therewith. In this embodiment, different versions and different efficiency grades are preset in the “dictionary” and define the formula, such as formula = {N183R2500, N183R2510…}, N183R2500 = input (injection current = X, injection time = Y), wherein the injection current X and the injection time Y can be input in the control panel 14, and the formula defined in the dictionary is searched according to N183R2500 called by the manufacturing execution system MES 2. After the component version and the efficiency grade are acquired, the required electrical injection parameters (injection current and injection time) can be accurately positioned. According to the component version and the efficiency grade, the controller 13 calls the electrical injection parameters corresponding to the application data dictionary, and sends the electrical injection parameters to the control panel 14, and the control panel 14 performs electrical injection on the photovoltaic module 4 according to the electrical injection parameters; by the mutual cooperation among the scanning recognizer 12, the control panel 14, the controller 13 and the manufacturing execution system MES 2, the electrical injection parameters can be quickly input in the control panel 14, and electrical injection is realized according to the electrical injection parameters, so as to maximize the gain of the photovoltaic module, and no manual intervention is required in the whole operation process.

[0051] In an alternative embodiment, the control panel 14 comprises an adding dictionary module and a modifying dictionary module, the adding dictionary module is used for adding a new dictionary, and the modifying dictionary module is used for modifying an original dictionary; the new dictionary and / or the modified original dictionary are fed back to the manufacturing execution system MES 2.

[0052] Specifically, continuing to refer to Figure 2 As shown in the figure, the adding new dictionary can be adding a new formula, and the modifying original dictionary can be modifying an original formula. Since the control panel 14 is connected to the controller 13, the formula in the formula library of the controller 13 is adjusted through the adding dictionary module and the modifying dictionary module. Specifically, a formula is added in the formula library through the adding dictionary module, and the original formula in the formula library is modified through the modifying dictionary module, such as adding a new component version and an efficiency grade, and the corresponding electrical injection parameters of the new component version and the efficiency grade. The original formula in the formula library is adjusted through the modifying dictionary module, such as modifying the corresponding electrical injection parameters of the original component version and the efficiency grade. With the above scheme, the application data dictionary in the controller 13 can be adjusted in time through the control panel 14, so as to adapt to the electrical injection parameters of different versions.

[0053] In an alternative embodiment, referring to Figure 4 As shown in the figure, Figure 4 is a structural schematic diagram of a cooling cavity provided by the present application; the electrical injection according to the electrical injection parameters comprises: the equipment end 1 comprises a cooling cavity 15, and the photovoltaic module 4 is subjected to electrical injection in the cooling cavity 15 after being laminated.

[0054] Specifically, continuing to refer to Figure 4 As shown in the figure, the cooling cavity 15 is used for cooling the photovoltaic module 4. After the photovoltaic module 4 is subjected to high-temperature curing treatment in a lamination cavity (not shown in the figure), in order to prevent the module from being cooled too quickly to affect the operation reliability and operation life of the module, the module is sent into the cooling cavity 15 for cooling treatment. The cooling method of the cooling cavity 15 is not limited here, and water cooling can be used for cooling liquid contact cooling, or air cooling can be used for gas cooling.

[0055] The temperature range of the cooling cavity 15 is 140-50℃. When the temperature of the photovoltaic module 4 is not lower than 100℃, electrical injection is started according to the electrical injection parameters. Taking the electrical injection parameters corresponding to the component version N1822430 as an example, the injection time is set to 10s; the current is set to 15A, the upper limit of the current is 20A, the lower limit of the current is 13A, the upper limit of the voltage is 60V, the lower limit of the voltage is 0V, and the start delay is 0. The electrical injection time is less than the module discharge cooling time, which does not affect the module production rhythm. The electrical injection in the cooling cavity 15 is synchronized with the module cooling, the electrical injection equipment does not need to occupy additional land, the investment cost is reduced, and the heat-induced attenuation of the battery piece caused by high temperature can be avoided, and the power of the module is improved.

[0056] In an alternative embodiment, in combination with Figure 4 and Figure 5 as shown, Figure 5 is a circuit schematic diagram of the electrical injection of a photovoltaic module 4 provided by the present application; the device end 1 further comprises a top needle 3 and a constant current source;

[0057] The cooling cavity 15 is provided with a conveying belt 150 conveying in the conveying direction of the conveying belt 150;

[0058] A plurality of photovoltaic modules 4 are arranged in sequence on the conveying belt 150 of the cooling cavity 15 in the conveying direction of the conveying belt 150, and each photovoltaic module 4 is provided with a positive lead-out wire 410 and a negative lead-out wire 411 on the side away from the conveying belt 150;

[0059] Each photovoltaic module 4 is provided with a three-axis slide rail 5 on the side away from the conveying belt 150, and the three-axis slide rail 5 is provided with a first top needle 31 and a second top needle 32 on the side close to the photovoltaic module 4;

[0060] After the visual positioning camera 6 identifies the positions of the positive lead-out wire 410 and the negative lead-out wire 411, the control system sends a signal to the three-axis slide rail 5, the three-axis slide rail 5 drives the first top needle 31 and the second top needle 32 to move in the first direction X and / or the second direction Y and / or the third direction Z, the first top needle 31 and the second top needle 32 are in contact with the positive lead-out wire 410 and the negative lead-out wire 411 respectively, and the photovoltaic module 4 is connected in series with the constant current source for electrical injection.

[0061] Specifically, continuing to refer to Figure 4 and Figure 5 as shown, the cooling cavity 15 is provided with a plurality of top needles 3, and the photovoltaic module 4 is provided with a lead-out wire 41 on the side close to the top needle 3, and the top needle 3 is connected with the constant current source to form a path with the lead-out wire 41, thereby performing electrical injection on the photovoltaic module 4.

[0062] The cooling cavity 15 can accommodate N photovoltaic modules 4, the first photovoltaic module 4 to the Nth photovoltaic module 4 are arranged in turn along the conveying direction of the conveying belt 150, each photovoltaic module 4 is provided with a positive electrode lead-out wire 410 and a negative electrode lead-out wire 411; a plurality of pairs of first thimbles 31 and second thimbles 32 are also arranged in turn along the conveying direction of the conveying belt 150; when the 1st first thimble is connected with the positive electrode lead-out wire 410 of the first photovoltaic module 4, the 1st second thimble is connected with the negative electrode lead-out wire 411 of the first photovoltaic module 4, the 2nd first thimble is connected with the positive electrode lead-out wire 410 of the second photovoltaic module 4, the 2nd second thimble is connected with the negative electrode lead-out wire 411 of the second photovoltaic module 4, until the Nth first thimble is connected with the positive electrode lead-out wire 410 of the Nth photovoltaic module 4, and the Nth second thimble is connected with the negative electrode lead-out wire 411 of the Nth photovoltaic module 4, the first photovoltaic module 4 to the Nth photovoltaic module 4 are connected in series, and the 1st first thimble is electrically connected with the positive electrode of the constant current source, and the Nth second thimble is electrically connected with the negative electrode of the constant current source, so that one constant current source can simultaneously perform electrical injection on N photovoltaic modules 4.

[0063] The cooling cavity 15 is provided with a plurality of thimbles 3, the side of the photovoltaic module 4 close to the thimble 3 is provided with a lead-out wire 41, the thimble 3 is connected with the constant current source and the lead-out wire 41 to form a passage, so as to perform electrical injection on the photovoltaic module 4; through the electrical injection on the module by the constant current source, the maximum output power (Pmax) gain of the photovoltaic module 4 reaches 1-2W.

[0064] The three-axis slide rail 5 includes a Z-axis guide rail 51, a Y-axis guide rail 52 and an X-axis guide rail 53, the Z-axis guide rail 51 drives the Y-axis guide rail 52 and the X-axis guide rail 53 to move along a third direction Z, the Y-axis guide rail 52 drives the X-axis guide rail 53 to move along a second direction Y, and the two ends of the X-axis guide rail 53 are respectively fixed with the first thimble 31 and the second thimble 32, and the X-axis guide rail 53 drives the first thimble 31 and the second thimble 32 to move along a first direction X; one three-axis slide rail 5 corresponds to one photovoltaic module 4, and the three-axis slide rail 5 drives the first thimble 31 and the second thimble 32 to move along the first direction X and / or the second direction Y and / or the third direction Z until the first thimble 31 and the second thimble 32 can be respectively in contact with the positive electrode lead-out wire 410 and the negative electrode lead-out wire 411 of the photovoltaic module 4, and the three-axis slide rail 5 drives the thimble 3 to move flexibly and be positioned accurately to the position of the lead-out wire 41.

[0065] It should be noted that the above-mentioned first direction X can be the conveying direction of the conveying belt 150, the second direction Y and the third direction Z are respectively intersected with the first direction X two by two, and optionally, the second direction Y and the third direction Z are respectively perpendicular to the first direction X two by two.

[0066] The three-axis slide rail 5 can be arranged at the top or the side wall of the cooling cavity 15, and a support can also be arranged in the cooling cavity 15 to fix the three-axis slide rail 5, and the fixed position of the three-axis slide rail 5 is not limited here, Figure 1It is only fixed on the top of the cooling cavity 15 by the three-axis slide rail 5 for illustrative purposes.

[0067] The three-axis slide rail 5 and the visual positioning camera 65 are connected with the control system (PLC, programmable logic controller 13), the control system controls the moving direction of the three-axis slide rail 5, the top pin 3 is connected with the constant current source outside the line,

[0068] The visual positioning camera 65 identifies the positions of the positive and negative lead-out wires 410 and 411 of the photovoltaic module 4; the control system sends a signal to the three-axis slide rail 5, the three-axis slide rail 5 drives the first and second top pins 31 and 32 to move along the first direction X and / or the second direction Y and / or the third direction Z, until the first and second top pins 31 and 32 of each three-axis slide rail 5 are respectively in contact with the positive and negative lead-out wires 410 and 411 of the corresponding photovoltaic module 4.

[0069] The cooling cavity 15 is provided with multiple pairs of first and second top pins 31 and 32, except that the first top pin is connected with the positive electrode of the constant current source and the Nth second top pin is connected with the negative electrode of the constant current source, each second top pin 32 is connected with the next adjacent first top pin 31; when the top pin 3 is in contact with the lead-out wire 41, multiple photovoltaic modules 4 are connected in series, and one constant current source can simultaneously perform electrical injection on multiple photovoltaic modules 4, thereby reducing the injection cost; the electrical injection in the cooling cavity 15 is synchronized with the cooling of the module, and the electrical injection device does not need to occupy additional space, thereby reducing the investment cost.

[0070] It should be noted that the number of the scanning identifier 12 can be multiple, the multiple scanning identifiers 12 are sequentially arranged along the conveying direction of the conveying belt 150 and are arranged in the cooling cavity 15, the scanning identifier 12 scans the barcode of the laminated photovoltaic module 4, the controller 13 uploads the barcode to the manufacturing execution system MES 2 after obtaining the barcode, the manufacturing execution system MES 2 calls the module information corresponding to the barcode, so as to call the appropriate electrical injection parameters.

[0071] In an optional embodiment, before obtaining the traceability information, the method further comprises:

[0072] The manufacturing execution system MES 2 establishes a formula library, and in the production process (string welding, overlay welding, barcode pasting-laminating, glass bonding, laminating, electrical injection, edge cutting, and frame assembly) of the photovoltaic module 4, the parameters corresponding to each process are uploaded to the manufacturing execution system MES 2.

[0073] The formula library includes IV test queries and FI inspection queries, wherein the FI inspection queries include but are not limited to components, component versions, product names, EL results, frame data, defect causes and defect positions, such as a component being 63FXS324F036100868600699, a component version being 63FX, a product name being JKM595N-72HL4, an EL result being OK, frame data being 2278*35*33mm, and a defect position being 2,0-0; the IV test queries include but are not limited to work orders, CIRs, sales orders, components, product descriptions, cell pieces, test times, workshops, powers, PMAs, FFs and IPMs, and the present embodiment does not limit the above data.

[0074] In combination with Figure 2 and Figure 6 shown in the drawings, Figure 6 is a structural schematic diagram of a photovoltaic module electric injection parameter adaptive modification system provided by the present application; the present embodiment provides a photovoltaic module electric injection parameter adaptive modification system, applied to the above photovoltaic module electric injection parameter adaptive modification method, and including:

[0075] A traceability information acquisition module 100 is coupled with the cell piece acquisition module and is used for acquiring traceability information, wherein the traceability information includes a bar code, and the traceability information is sent to an execution manufacturing system MES 2;

[0076] A cell piece acquisition module 200 is coupled with the traceability information acquisition module and the electric injection parameter module respectively, and is used for the execution manufacturing system MES 2 to acquire component information corresponding to the traceability information, wherein the component information includes a component version and an efficiency grade;

[0077] An electric injection parameter module 300 is coupled with the cell piece acquisition module and the electric injection respectively, and is used for acquiring the component information, inputting electric injection parameters at the device end 1 according to the component information, wherein the electric injection parameters include injection current and injection time;

[0078] An electric injection module 400 is used for electric injection according to the electric injection parameters.

[0079] In an alternative embodiment, in combination with Figure 6 and Figure 7 shown in the drawings, Figure 7 is a data acquisition principle diagram of each process, and the execution manufacturing system MES 2 in the present embodiment includes a data acquisition module, and the data acquisition module is used for data interaction between an automatic data acquisition device and a production device to acquire device information.

[0080] Specifically, the production equipment includes a feeding device, a slicing device, a string welding device, a lap welding device, a laminating device, a packaging device and a testing device, and the feeding device, the slicing device, the string welding device, the lap welding device, the laminating device, the packaging device and the testing device are all provided with automatic data acquisition devices, the production equipment transmits data of production conditions to the automatic data acquisition devices through a network communication protocol, the automatic data acquisition devices transmit the data to data middleware, and then a manufacturing system MES2 listens to the data middleware to acquire messages.

[0081] It should be noted that the data acquisition is distributed acquisition, and each process has an acquisition device, so the acquisition devices of each tool may not come from a company, and the communication protocols between the production equipment and the data acquisition devices are compatible, and the acquisition devices upload the acquired data to the manufacturing system MES2.

[0082] It can be known from the above embodiment that the photovoltaic module electric injection parameter self-adaptive modification method and system provided by the application at least achieve the following beneficial effects:

[0083] The photovoltaic module electric injection parameter self-adaptive modification method and system provided by the application, the photovoltaic module electric injection parameter self-adaptive modification method comprises the following steps: obtaining traceability information, wherein the traceability information comprises a bar code; and sending the traceability information to a manufacturing execution system MES. The manufacturing execution system MES obtains module information corresponding to the traceability information, the module information comprises a module version and an efficiency grade; obtaining the module information, inputting electric injection parameters at an equipment end according to the module information, the electric injection parameters comprise an injection current and an injection time; and performing electric injection according to the electric injection parameters. By using the above scheme, the module information is identified through the traceability information, the electric injection parameters are automatically modified according to the module information, the electric injection gain is maximized, and manual intervention is not required.

[0084] Although some specific embodiments of the application have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration, but not for limiting the scope of the application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the application. The scope of the application is defined by the appended claims.

Claims

1. A method for adaptive modification of electrical injection parameters of a photovoltaic assembly, characterized in that, The method comprises the following steps: acquiring traceability information, wherein the traceability information comprises a barcode, and sending the traceability information to an execution manufacturing system MES; the execution manufacturing system MES acquires component information corresponding to the traceability information, wherein the component information comprises a component version and an efficiency grade; acquiring the component information, inputting an electrical injection parameter at a device end according to the component information, wherein the electrical injection parameter comprises an injection current and an injection time; carrying out electrical injection according to the electrical injection parameter.

2. The photovoltaic module electrical injection parameter adaptive modification method according to claim 1, wherein the device end comprises a scanning recognizer, a control panel and a controller, the scanning recognizer and the control panel are electrically connected with the controller respectively, an application data dictionary is configured on the controller, the scanning recognizer is used for recognizing the barcode, and the control panel is used for inputting the electrical injection parameter; the controller acquires the barcode and uploads the barcode to the execution manufacturing system MES, and the execution manufacturing system MES transmits the component information corresponding to the barcode to the controller; according to the component version and the efficiency grade, the controller calls the electrical injection parameter corresponding in the application data dictionary and sends the electrical injection parameter to the control panel.

3. The photovoltaic module electrical injection parameter adaptive modification method according to claim 2, wherein the control panel comprises an adding dictionary module and a modifying dictionary module, the adding dictionary module is used for adding a new dictionary, and the modifying dictionary module is used for modifying an original dictionary; new dictionaries and / or modified original dictionaries are fed back to the execution manufacturing system MES.

4. The method of adaptive modification of electrical injection parameters for photovoltaic modules of claim 1, wherein, carrying out electrical injection according to the electrical injection parameter comprises: the device end comprises a cooling cavity, and the photovoltaic module is subjected to electrical injection in the cooling cavity after being laminated.

5. The photovoltaic module electrical injection parameter adaptive modification method according to claim 4, wherein the device end further comprises a top pin and a constant current source; the cooling cavity is provided with a conveying belt transmitting along a conveying direction of the conveying belt; a plurality of photovoltaic modules are arranged in sequence on the conveying belt of the cooling cavity along the conveying direction of the conveying belt, and each photovoltaic module is provided with a positive electrode lead-out wire and a negative electrode lead-out wire on a side away from the conveying belt; each photovoltaic module is provided with a three-axis slide rail on the side away from the conveying belt, and the three-axis slide rail is provided with a first top pin and a second top pin on a side close to the photovoltaic module; after a visual positioning camera recognizes the positions of the positive electrode lead-out wire and the negative electrode lead-out wire, a control system sends a signal to the three-axis slide rail, the three-axis slide rail drives the first top pin and the second top pin to move along a first direction and / or a second direction and / or a third direction, the first top pin and the second top pin are in contact with the positive electrode lead-out wire and the negative electrode lead-out wire respectively, and the photovoltaic module is connected in series with the constant current source to carry out electrical injection.

6. The method of adaptive modification of electrical injection parameters for photovoltaic modules of claim 1, wherein, before the traceability information is acquired, the method further comprises the following steps: In the execution manufacturing system MES, a formula library is established, and the formula library includes IV test query and FI inspection query, wherein the FI inspection query includes components, component version, product name, EL result, frame data, defect reason and defect position.

7. The method of adaptive modification of electrical injection parameters for photovoltaic modules of claim 1, wherein, The injection current includes a start time of the injection current, an upper limit of the injection current, and a lower limit of the injection current; and the injection time includes an upper limit of the injection time and a lower limit of the injection time.

8. The method of adaptive modification of electrical injection parameters for photovoltaic modules of claim 1, wherein, The injection current ranges from 5A to 20A, and the injection time is not more than 200S.

9. A photovoltaic module electrical injection parameter self-adapting modification system, characterized in that, It comprises: The traceability information acquisition module is coupled with the battery piece acquisition module and is used for acquiring traceability information, wherein the traceability information includes a bar code, and the traceability information is sent to the execution manufacturing system MES; The battery piece acquisition module is coupled with the traceability information acquisition module and the electrical injection parameter module, respectively, and is used for the execution manufacturing system MES to acquire component information corresponding to the traceability information, wherein the component information includes component version and efficiency grade; The electrical injection parameter module is coupled with the battery piece acquisition module and the electrical injection, respectively, and is used for acquiring the component information and inputting electrical injection parameters at the equipment end according to the component information, wherein the electrical injection parameters include injection current and injection time; The electrical injection module is used for electrical injection according to the electrical injection parameters.

10. The photovoltaic module electrical injection parameter self-adaptive modification system of claim 9, wherein, The execution manufacturing system MES includes a data acquisition module, and the data acquisition module is used for data interaction between the automatic data acquisition equipment and the production equipment to acquire equipment information.

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