Photovoltaic module lamination method and system
By generating a film application path reference based on the stacked components in the photovoltaic module film application method, the problem of insufficient film application accuracy is solved, achieving higher film application accuracy and light energy utilization, which is suitable for narrow film strip applications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG JINKO SOLAR CO LTD
- Filing Date
- 2023-01-05
- Publication Date
- 2026-07-24
AI Technical Summary
Existing photovoltaic module film application methods suffer from insufficient film application precision, resulting in low light energy utilization, especially at the gaps between solar cells where light energy is difficult to fully utilize.
The film application module receives the film application path reference generated by the positioning module, simulates the synthesis process of perforated glass and stacked components, and applies the film based on the stacked components to avoid glass size errors and other cumulative errors, thereby improving the film application accuracy.
It improves the accuracy of film application, reduces the light leakage rate of photovoltaic modules, makes full use of the light energy in the gaps between cells, enhances the light energy utilization rate, and is suitable for narrow film strip applications.
Smart Images
Figure CN116314440B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of photovoltaic solar energy technology, and more specifically, to a method and system for applying a film to photovoltaic modules. Background Technology
[0002] Traditional photovoltaic (PV) modules consist of a backsheet, encapsulating film, solar cells, encapsulating film, and glass panel. Gaps exist between the cells and between strings, making it difficult for light energy reaching these gaps to be directly absorbed and utilized. Therefore, the PV industry uses reflective backsheets instead of traditional backsheets or reflective white EVA (Polyethylene vinyl acetate copolymer) instead of encapsulating film to utilize the light energy from these gaps and improve light energy utilization efficiency. However, the efficiency gain from reflective materials is low, resulting in a relatively low overall module efficiency improvement.
[0003] In related technologies, to solve the above problems, photovoltaic modules are assembled by a backsheet, a glass plate covered on the backsheet, and several solar cells located between the two. Reflective films are used to cover the gaps between the solar cells. The photovoltaic module uses the reflective films covering the gaps between the solar cells to reflect the light energy that shines on the gaps between the solar cells onto the glass plate, and then reflect it back to the solar cells through the glass plate, so as to make full use of the light energy in the gaps between the solar cells and improve the light energy utilization rate.
[0004] However, in the production of solar cell film, the existing film application methods have large errors, and the film application accuracy needs to be improved. Summary of the Invention
[0005] In view of this, the present invention provides a method and system for applying a film to a photovoltaic module, so as to improve the film application accuracy and reduce the light leakage rate of the module.
[0006] In a first aspect, this application provides a method for applying a photovoltaic module film, comprising:
[0007] The film application module receives the film application path reference generated by the positioning module;
[0008] The film-applying module simulates the assembly process of perforated glass and stacked components;
[0009] The film application module copies the film application path reference onto the perforated glass;
[0010] The film application module applies the film according to the film application path reference;
[0011] The film application path reference is generated based on the stacked components.
[0012] Optionally, where:
[0013] The positioning module generates the film application path reference, specifically as follows:
[0014] The positioning module scans the stacked components and the perforated glass;
[0015] The positioning module collects dimensional data of the stacked components and the perforated glass;
[0016] The positioning module generates the film application path reference based on the size data.
[0017] Optionally, where:
[0018] The dimensional data includes the creepage distance, string spacing, sheet spacing of the stacked components, and the dimensions of the perforated glass.
[0019] Optionally, where:
[0020] The film-applying module simulates the assembly process of perforated glass and stacked components, specifically:
[0021] The simulation component in the film application module receives the film application path reference;
[0022] The simulation component simulates the film application position on the perforated glass according to the film application path;
[0023] The simulation component simulates the bonding process of the perforated glass and the stacked components after the film is applied.
[0024] Optionally, where:
[0025] After the positioning module generates the film application path reference, it automatically transmits it to the film application module.
[0026] Secondly, this application provides a photovoltaic module film application system, including a film application module and a positioning module;
[0027] The film application module is used to receive the film application path reference generated by the positioning module, and is also used to simulate the synthesis process of the perforated glass and the stacked components, to copy the film application path reference onto the perforated glass, and to apply the film according to the film application path reference.
[0028] The positioning module is used to generate a reference for the film application path.
[0029] Optionally, where:
[0030] The positioning module includes a visual acquisition camera and a camera support frame, wherein the camera support frame is fixedly connected to the visual acquisition camera.
[0031] The visual acquisition camera is used to scan the stacked components and the perforated glass, and is also used to acquire the creepage distance, string spacing, sheet spacing of the stacked components and the size of the perforated glass. It is also used by the positioning module to generate the film application path reference based on the creepage distance, string spacing, sheet spacing and the size of the perforated glass.
[0032] Optionally, where:
[0033] The positioning module also includes a light source, which is fixedly connected to the camera support frame and located below the visual acquisition camera.
[0034] Optionally, where:
[0035] The film application module also includes a servo motor and a film application head, wherein the servo motor controls the film application head to apply the film.
[0036] Optionally, where:
[0037] The film application module also includes a simulation component, which is installed on the film application module. The simulation component is used to receive the film application path reference; to simulate the film application position on the perforated glass according to the film application path; and to simulate the synthesis process of the perforated glass and the stacked components after film application.
[0038] Compared with the prior art, the photovoltaic module film application method and system provided by the present invention achieves at least the following beneficial effects:
[0039] This application provides a photovoltaic module film application method and system. The photovoltaic module film application method includes: a film application module receiving a film application path reference generated by a positioning module; the film application module simulating the synthesis process of perforated glass and stacked components; the film application module copying the film application path reference onto the perforated glass; and the film application module applying film according to the film application path reference; wherein the film application path reference is generated based on the stacked components. The photovoltaic module film application system includes: a film application module and a positioning module. The film application module is used to receive the film application path reference generated by the positioning module, and is also used to simulate the synthesis process of perforated glass and stacked components, copy the film application path reference onto the perforated glass, and apply film according to the film application path reference; the positioning module is used to generate the film application path reference. The photovoltaic module film application method and system provided in this application, by applying film based on the stacked components, can more accurately determine the position where film needs to be applied, improve film application accuracy, reduce the light leakage rate of the photovoltaic module, fully utilize the light energy in the gaps between the cells, improve light energy utilization, and is more suitable for narrow film strips.
[0040] Of course, any product implementing this invention does not necessarily need to achieve all of the technical effects described above at the same time.
[0041] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description
[0042] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.
[0043] Figure 1 The diagram shows the process of applying film to photovoltaic modules.
[0044] Figure 2 As shown Figure 1 Detailed flowchart of S01;
[0045] Figure 3 The diagram shown is a schematic representation of one embodiment of the photovoltaic module film application method;
[0046] Figure 4 As shown Figure 1 Detailed flowchart of S02
[0047] Figure 5 The diagram shows a photovoltaic module film application system. Detailed Implementation
[0048] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of the invention.
[0049] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.
[0050] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.
[0051] In all the examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.
[0052] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.
[0053] Traditional photovoltaic (PV) modules consist of a backsheet, encapsulating film, solar cells, encapsulating film, and glass panel. Gaps exist between the cells and between strings, making it difficult for light energy reaching these gaps to be directly absorbed and utilized. Therefore, the PV industry uses reflective backsheets instead of traditional backsheets or reflective white EVA instead of encapsulating film to utilize the light energy from these gaps and improve light energy utilization. However, the efficiency gains from reflective materials are low, resulting in relatively low module efficiency improvements.
[0054] In related technologies, to solve the above problems, photovoltaic modules are assembled by a backsheet, a glass plate covered on the backsheet, and several solar cells located between the two. Reflective films are used to cover the gaps between the solar cells. The photovoltaic module uses the reflective films covering the gaps between the solar cells to reflect the light energy that shines on the gaps between the solar cells onto the glass plate, and then reflect it back to the solar cells through the glass plate, so as to make full use of the light energy in the gaps between the solar cells and improve the light energy utilization rate.
[0055] However, in the production of solar cell film, the existing film application methods use the glass itself as the reference. The glass itself has dimensional errors, and there are also errors in the string spacing and creepage distance of the stacked components. After the errors accumulate, the film application error is relatively large, the film width cannot be further reduced, and the film application accuracy needs to be improved.
[0056] In view of this, the present invention provides a method and system for applying a film to a photovoltaic module, so as to improve the film application accuracy and reduce the light leakage rate of the module.
[0057] Figure 1 The following is a flowchart of the photovoltaic module film application method. Please refer to it. Figure 1 This application provides a method for applying a film to a photovoltaic module, comprising:
[0058] S01, The film application module receives the film application path reference generated by the positioning module;
[0059] S02, The film-applying module simulates the synthesis process of perforated glass and stacked components;
[0060] S03, The film application module copies the film application path reference onto the perforated glass;
[0061] S04. The film application module applies the film according to the film application path reference.
[0062] Specifically, this application provides an optional implementation method in which a positioning module generates a film-applying path reference and transmits it to a film-applying module. Upon receiving the film-applying path reference, the film-applying module simulates the assembly process of the perforated glass and the stacked components after film application according to the reference. The film-applying module then copies the film-applying path reference onto the perforated glass and finally applies the film according to the reference. The film-applying path reference is generated based on the stacked components, avoiding dimensional errors in the perforated glass itself and reducing the superposition of errors. This allows for more accurate determination of the required film application location, thereby improving the accuracy of film application, reducing the light leakage rate of the photovoltaic module, fully utilizing the light energy between the cells, improving light energy utilization, and making it more suitable for narrow film strip applications.
[0063] It should be noted that the stacked assembly refers to an arranged battery string, which is composed of battery cells connected by solder strips. Using the stacked assembly as a reference to generate the film application path allows for more accurate determination of the location where the film needs to be applied, resulting in higher accuracy in film application.
[0064] Figure 2 As shown Figure 1 Detailed flowchart of S01 in China Figure 3 The diagram shown illustrates one embodiment of the photovoltaic module film application method. Please refer to it. Figure 2 and Figure 3 Optionally, the positioning module generates a film application path reference, specifically: S011, the positioning module scans the stacked components 40 and the perforated glass 30; S012, the positioning module collects the dimensional data of the stacked components 40 and the perforated glass 30; S013, the positioning module generates a film application path reference based on the dimensional data.
[0065] Specifically, this application provides an optional implementation in which the positioning module scans the stacked components 40 and the perforated glass 30, collects dimensional data of the scanned stacked components 40 and the perforated glass 30, and generates a film-applying path reference based on the collected dimensional data. This film-applying path reference uses the stacked components 40 as a reference, avoiding the accumulation of dimensional errors between the string spacing L1, the panel spacing L2, the creepage spacing S of the stacked components 40 and the perforated glass 30, reducing the film-applying error, thereby reducing the light leakage rate of the photovoltaic module.
[0066] Please continue to refer to this. Figure 3 Optionally, the dimensional data includes the creepage distance S, string spacing L1, sheet spacing L2 of the stacked components 40 and the dimensions of the perforated glass 30.
[0067] Specifically, this application provides an optional implementation in which the positioning module collects the creepage distance S, string spacing L1, cell spacing L2, and the dimensions of the perforated glass 30 of the stacked components 40. It should be noted that creepage distance is defined as the shortest distance measured along the insulating surface between two adjacent conductors or a conductor and the surface of an adjacent motor housing. In this application, creepage distance S refers to the distance from the edge of the solar cell 41 to the edge of the perforated glass 30, and creepage distance S is an important indicator for measuring the safety of photovoltaic modules. String spacing L1 refers to the spacing between solar cell strings. Cell spacing L2 refers to the spacing between solar cells 41. The dimensions of the perforated glass 30 refer to the length and width of the perforated glass 30 or the diagonal of the perforated glass 30. The distance dimensions in the accompanying drawings of this application do not represent actual or relative sizes and are for illustrative purposes only.
[0068] Figure 4 As shown Figure 1 For a detailed flowchart of S02, please refer to [link / reference]. Figure 3 and Figure 4 This application provides an optional implementation in which the film-applying module simulates the synthesis process of the perforated glass 30 and the stacked components 40, specifically: S021, the simulation component in the film-applying module receives the film-applying path reference; S022, the simulation component simulates the film-applying position on the perforated glass 30 according to the film-applying path; S023, the simulation component simulates the synthesis process of the perforated glass 30 and the stacked components 40 after film application.
[0069] Specifically, in the photovoltaic module film application method 100 provided in this application, one step involves the film application module simulating the assembly process of the perforated glass 30 and the stacked components 40. Specifically, the film application module includes a simulation component. After receiving the film application path reference generated by the positioning module, the simulation component simulates the film application position on the perforated glass 30 according to the film application path. Then, the simulation component simulates the assembly process of the perforated glass 30 and the stacked components 40 after the simulated film application. Thus, simulating the film application process and the assembly process of the perforated glass 30 and the stacked components 40 before applying the film improves the accuracy of the film application.
[0070] This application provides an optional implementation in which the positioning module generates a film application path reference and then automatically transmits it to the film application module.
[0071] Specifically, after generating the film application path reference, the positioning module needs to transmit it to the film application module for subsequent film application steps. The positioning module and the film application module are connected. After generating the film application path reference, the positioning module automatically transmits it to the film application module in the form of an image, which increases the automation level of photovoltaic module film application and improves film application efficiency.
[0072] Figure 5 The diagram shown is a schematic of a photovoltaic module film application system. Please refer to it. Figure 3 and Figure 5Based on the same inventive concept, this application provides a photovoltaic module film application system 200, including a film application module 20 and a positioning module 10; the film application module 20 is used to receive the film application path reference generated by the positioning module 10, and is also used to simulate the synthesis process of the perforated glass 30 and the stacked components 40, and is also used to copy the film application path reference onto the perforated glass 30, and is also used to apply the film according to the film application path reference; the positioning module 10 is used to generate the film application path reference.
[0073] Specifically, this application provides an optional implementation of a photovoltaic module film-applying system 200, including a film-applying module 20 and a positioning module 10. After generating a film-applying path reference, the positioning module 10 transmits it to the film-applying module 20. The film-applying module 20 receives the film-applying path reference, copies it onto the perforated glass 30 to simulate film application, and then applies the film according to the film-applying path reference. The film-applying path reference of this application is generated based on the stacked components 40, avoiding dimensional errors in the perforated glass 30 itself and reducing the superposition of errors, thereby improving the accuracy of film application and making it more suitable for narrow film strip applications, reducing light leakage from the photovoltaic module.
[0074] Please continue to refer to this. Figure 3 and Figure 5 This application provides an optional implementation in which the positioning module 10 includes a visual acquisition camera 13 and a camera support frame 12, with the camera support frame 12 fixedly connected to the visual acquisition camera 13; the visual acquisition camera 13 is used to scan the stacked components 40 and the perforated glass 30, and is also used to acquire the creepage spacing, string spacing, sheet spacing of the stacked components 40 and the dimensions of the perforated glass 30, and is also used by the positioning module 10 to generate a film application path reference based on the creepage spacing, string spacing, sheet spacing and the dimensions of the perforated glass 30.
[0075] Specifically, in the photovoltaic module film application system 200 provided in this application, the positioning module 10 is used to generate a film application path reference. The positioning module 10 includes a vision acquisition camera 13 and a camera support frame 12. The camera support frame 12 is used to fix the vision acquisition camera 13, providing a stable working environment for the vision acquisition camera 13. The vision acquisition camera 13 scans the stacked components 40 and the perforated glass 30, and acquires the creepage distance, string spacing, and inter-sheet spacing of the stacked components 40, as well as the dimensions of the perforated glass 30 itself. Based on the acquired creepage distance, string spacing, inter-sheet spacing, and dimensions of the perforated glass 30, a film application path reference is generated and transmitted to the film application module 20 for subsequent film application. The film application path reference in this application uses the stacked components 40 as a reference, which improves the accuracy of photovoltaic module film application. At the same time, the photovoltaic module film application system 200 in this application is more suitable for narrow film strip applications, reducing light leakage of photovoltaic modules.
[0076] Please continue to refer to this. Figure 5In an optional embodiment provided by this application, the positioning module 10 further includes a light source 11, which is fixedly connected to the camera support frame 12 and located below the visual acquisition camera 13.
[0077] Specifically, the positioning module 10 also includes a light source 11, which provides better visual effects for the visual acquisition camera 13, improves the accuracy of the data acquired by the visual acquisition camera 13, thereby improving the accuracy of the film-applying path reference generated by the visual acquisition camera 13, further improving the accuracy of the photovoltaic module film-applying system 200, and improving the film-applying precision.
[0078] Please continue to refer to this. Figure 5 In an optional embodiment provided by this application, the film application module 20 further includes a servo motor 22 and a film application head 23, wherein the servo motor 22 controls the film application head 23 to apply the film.
[0079] Specifically, the film application module 20 also includes a servo motor 22 and a film application head 23. The film application head 23 is used to perform the film application operation. The servo motor 22 controls the film application head 23 to apply the film. The film application position is automatically adjusted according to the film application reference, which can more accurately control the film application, improve the accuracy of the film application position, reduce the light leakage rate of the photovoltaic module, and is more suitable for narrow film strips.
[0080] Please refer to Figure 3 and Figure 5 In an optional embodiment, the film application module 20 further includes a simulation component 21, which is installed on the film application module 20. The simulation component 21 is used to receive the film application path reference; to simulate the film application position on the perforated glass 30 according to the film application path; and to simulate the synthesis process of the perforated glass 30 and the stacked components 40 after film application.
[0081] Specifically, the film application module 20 in the photovoltaic module film application system 200 also includes a simulation component 21. The simulation component 21 is installed in the film application module 20. The simulation component 21 receives the film application path reference generated by the positioning module 10, simulates the film application position on the perforated glass 30 according to the film application path reference, and then simulates the synthesis process of the perforated glass 30 and the stacked components 40 after the simulated film application. After the simulation is completed, the film is applied. In this way, the accuracy of film application can be further improved, thereby reducing the light leakage rate of the photovoltaic module.
[0082] As can be seen from the above embodiments, the photovoltaic module film application method and system provided by the present invention achieves at least the following beneficial effects:
[0083] This application provides a photovoltaic module film application method and system. The photovoltaic module film application method includes: a film application module receiving a film application path reference generated by a positioning module; the film application module simulating the synthesis process of perforated glass and stacked components; the film application module copying the film application path reference onto the perforated glass; and the film application module applying film according to the film application path reference; wherein the film application path reference is generated based on the stacked components. The photovoltaic module film application system includes: a film application module and a positioning module. The film application module is used to receive the film application path reference generated by the positioning module, and is also used to simulate the synthesis process of perforated glass and stacked components, copy the film application path reference onto the perforated glass, and apply film according to the film application path reference; the positioning module is used to generate the film application path reference. The photovoltaic module film application method and system provided in this application, by applying film based on the stacked components, can more accurately determine the position where film needs to be applied, improve film application accuracy, reduce the light leakage rate of the photovoltaic module, fully utilize the light energy in the gaps between the cells, improve light energy utilization, and is more suitable for narrow film strips.
[0084] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims
1. A method for applying a film to a photovoltaic module, characterized in that, include: The positioning module generates the film application path reference, including: The positioning module scans the stacked components and the perforated glass; The positioning module collects dimensional data of the stacked components and the perforated glass; The positioning module generates the film application path reference based on the size data; The film application module receives the film application path reference generated by the positioning module; The film-applying module simulates the assembly process of perforated glass and stacked components, specifically: The simulation component in the film application module receives the film application path reference; The simulation component simulates the film application position on the perforated glass according to the film application path; The simulation component simulates the bonding process of the perforated glass and the stacked components after the film is applied; The film application module copies the film application path reference onto the perforated glass; The film application module applies the film according to the film application path reference; The film application path reference is generated based on the stacked components.
2. The photovoltaic module film application method according to claim 1, characterized in that, The dimensional data includes the creepage distance, string spacing, sheet spacing of the stacked components, and the dimensions of the perforated glass.
3. The photovoltaic module film application method according to claim 1, characterized in that, After the positioning module generates the film application path reference, it automatically transmits it to the film application module.
4. A photovoltaic module film application system, characterized in that, Includes a film application module and a positioning module; The film application module is used to receive the film application path reference generated by the positioning module, and is also used to simulate the synthesis process of the perforated glass and the stacked components. It is also used to copy the film application path reference onto the perforated glass, and to apply the film according to the film application path reference. The film application module further includes a simulation component installed on the film application module. The simulation component is used to receive the film application path reference; to simulate the film application position on the perforated glass according to the film application path; and to simulate the synthesis process of the perforated glass and the stacked components after film application. The positioning module is used to generate a film application path reference. The positioning module includes a visual acquisition camera and a camera support frame, and the camera support frame is fixedly connected to the visual acquisition camera. The visual acquisition camera is used to scan the stacked components and the perforated glass, and is also used to acquire the creepage distance, string spacing, sheet spacing of the stacked components and the size of the perforated glass. It is also used by the positioning module to generate the film application path reference based on the creepage distance, string spacing, sheet spacing and the size of the perforated glass.
5. The photovoltaic module film application system according to claim 4, characterized in that, The positioning module also includes a light source, which is fixedly connected to the camera support frame and located below the visual acquisition camera.
6. The photovoltaic module film application system according to claim 4, characterized in that, The film application module also includes a servo motor and a film application head, wherein the servo motor controls the film application head to apply the film.