A coating device for self-cleaning photovoltaic modules

Abstract

This application discloses a coating equipment for self-cleaning photovoltaic modules, relating to the field of photovoltaic module production equipment technology. It includes: a vacuum chamber with several independent temperature zones, each equipped with an independent temperature control module and temperature sensor; a conveying mechanism penetrating the vacuum chamber, suitable for carrying and transporting photovoltaic modules, allowing them to sequentially pass through the independent temperature zones; a microwave generator mounted on the vacuum chamber with its working end facing the conveying mechanism; and a control module configured to dynamically adjust the temperature of each independent temperature zone based on signals fed back from the temperature sensors using a PID algorithm, and to control the start and stop of the microwave generator. The advantages of this application are: by setting multiple independent temperature zones within the vacuum chamber and dynamically adjusting the temperature of each zone using a PID algorithm, gradient curing is achieved; and by integrating a microwave generator, the coating layer can be penetrated, accelerating molecular motion and shortening the curing time.

Description

Technical Field

[0001] This application relates to the field of photovoltaic module production equipment technology, and in particular discloses a coating equipment for self-cleaning photovoltaic modules. Background Technology

[0002] The self-cleaning function of photovoltaic modules relies on the preparation of functional coatings on the surface. However, existing coating equipment has shortcomings in the thin film curing process: due to the uneven temperature field distribution inside the cavity, the existing coating curing method is prone to defects such as internal stress concentration, microcracks or local peeling during the curing process, which affects the light transmittance and durability of the coating layer. In addition, conventional curing processes rely on heat conduction from the surface to the interior, which takes a long time and seriously restricts the production cycle and capacity improvement, making it difficult to meet the needs of large-scale production. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this application is to provide a coating device for self-cleaning photovoltaic modules.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: a coating device for self-cleaning photovoltaic modules, comprising: a vacuum chamber, wherein a plurality of independent temperature zones are provided within the vacuum chamber, and each of the independent temperature zones is provided with an independent temperature control module and a temperature sensor; a conveying mechanism, which penetrates the vacuum chamber and is adapted to carry and transport photovoltaic modules, allowing them to pass sequentially through the independent temperature zones; a microwave generator, which is disposed on the vacuum chamber with its working end facing the conveying mechanism; and a control module, which is configured to control each of the temperature control modules to dynamically adjust the temperature of the corresponding independent temperature zone based on the signal fed back by the temperature sensor using a PID algorithm, and to control the start and stop of the microwave generator.

[0005] As a preferred embodiment, each of the independent temperature zones is separated by a heat insulation baffle, which is adapted to slide in the vertical direction. A first position sensor and a second position sensor are respectively provided on both sides of the heat insulation baffle. The first position sensor is configured to detect the distance between the photovoltaic module closest in the incoming material direction and the heat insulation baffle. The second position sensor is configured to detect whether the photovoltaic module passes through the heat insulation baffle. The heat insulation baffle is configured to open when the photovoltaic module passes through and close after the photovoltaic module passes through.

[0006] As a preferred embodiment, the independent temperature zone includes at least a first curing zone, a second curing zone, and a third curing zone arranged in sequence, wherein the temperature in the first curing zone is lower than the temperature in the second curing zone, and the temperature in the second curing zone is higher than the temperature in the third curing zone.

[0007] Further preferably, a preheating zone is provided inside the vacuum chamber, and the preheating zone is located in the sequence preceding the first curing zone.

[0008] As a preferred embodiment, the temperature control module includes a heating unit and a cooling unit. The heating unit is disposed on the outer side of the cavity wall of the vacuum chamber and is configured to provide stable heat to the corresponding independent temperature zone. The cooling unit is disposed on the outer side of the cavity wall of the vacuum chamber and is configured to uniformly cool the interior of the independent temperature zone.

[0009] Further preferably, the heating unit includes heating elements that are uniformly attached to the outer side of the cavity wall of the vacuum chamber, with gaps between adjacent heating elements, and the cooling unit includes cooling pipes that are uniformly laid in the gaps.

[0010] As a preferred embodiment, the temperature sensor is mounted on the vacuum chamber, with its detection end extending into the corresponding independent temperature zone and facing the photovoltaic module.

[0011] As a preferred embodiment, the conveying mechanism is located at the bottom of the vacuum chamber and includes a unidirectional conveyor belt with a plurality of support platforms. The support platforms are configured to support and fix the photovoltaic module when they are inside the vacuum chamber, and to release the fixation of the photovoltaic module after they pass through the vacuum chamber.

[0012] In a further preferred embodiment, the support platform is provided with a vacuum adsorption device, which is configured to adsorb and fix the photovoltaic module when the support platform is in the vacuum cavity, and to release the adsorption on the photovoltaic module when the support platform passes through the vacuum cavity.

[0013] As a preferred embodiment, the microwave generator operates at least within the second curing zone and is configured to provide uniform microwave radiation to the photovoltaic module corresponding to the independent temperature zone.

[0014] Compared with the prior art, the beneficial effects of this application are as follows: (1) This application establishes multiple independent temperature zones in the vacuum cavity and adopts a partition temperature control module based on PID algorithm, which can dynamically and accurately control the temperature of each independent temperature zone in the vacuum cavity, solves the problem of uneven temperature field distribution in the prior art, effectively avoids defects such as internal stress concentration, microcracks or local peeling caused by temperature difference, thereby ensuring the excellent light transmittance and long-term durability of the coating layer.

[0015] (2) In this application, the zoned temperature control realizes the gradient curing of the coating layer. Then, by introducing microwave-assisted heating, its penetrating ability allows energy to act directly on the molecules inside the coating layer, accelerating the movement of molecules inside the coating layer, forming an optimized curing process that is temperature-controllable from the inside out, shortening the curing time, greatly improving the production cycle, and meeting the needs of large-scale continuous production. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 3 This is a schematic diagram of the layout of this utility model.

[0019] Figure 4 This is a three-dimensional structural diagram of the temperature control module of this utility model.

[0020] Figure 5 This is a three-dimensional structural diagram of the conveying mechanism of this utility model.

[0021] In the diagram: 1. Vacuum chamber; 11. Independent temperature zone; 111. First curing zone; 112. Second curing zone; 113. Third curing zone; 114. Preheating zone; 12. Heat insulation baffle; 13. First position sensor; 14. Second position sensor; 2. Temperature control module; 21. Heating unit; 22. Cooling unit; 3. Temperature sensor; 4. Conveying mechanism; 41. Conveyor belt; 42. Support platform; 5. Photovoltaic module; 6. Microwave generator. Detailed Implementation

[0022] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0024] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0025] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0026] A preferred embodiment of this application, such as Figures 1 to 5 As shown, a coating device for a self-cleaning photovoltaic module includes: a vacuum chamber 1, which has several independent temperature zones 11. Each independent temperature zone 11 is equipped with an independent temperature control module 2 and a temperature sensor 3. The temperature sensor 3 is mounted on the vacuum chamber 1, with its detection end extending into the corresponding independent temperature zone 11 and facing the photovoltaic module 5; a conveying mechanism 4, which passes through the vacuum chamber 1 and is adapted to carry and transport the photovoltaic module 5, allowing it to pass through the independent temperature zones 11 in sequence; a microwave generator 6, which is mounted on the vacuum chamber 1, with its working end facing the conveying mechanism 4; and a control module, which is configured to dynamically adjust the temperature of the corresponding independent temperature zone 11 based on the signal fed back by the temperature sensor 3 using a PID algorithm, and to control the start and stop of the microwave generator 6.

[0027] This application establishes multiple independent temperature zones 11 within the vacuum chamber 1 and employs a zone temperature control module 2 based on a PID algorithm. This module can dynamically and precisely regulate the temperature of each independent temperature zone 11 within the vacuum chamber 1, solving the problem of uneven temperature field distribution in the prior art. It effectively avoids defects such as internal stress concentration, microcracks, or localized peeling caused by temperature differences, thereby ensuring the excellent light transmittance and long-term durability of the coating layer. In this application, zone temperature control enables gradient curing of the coating layer. Furthermore, by introducing microwave-assisted heating, its penetrating ability allows energy to directly act on the molecules inside the coating layer, accelerating the movement of molecules within the coating layer. This forms an optimized curing process that is temperature-controlled from the inside out, shortening the curing time to less than 5 minutes, greatly improving the production cycle and meeting the needs of large-scale continuous production.

[0028] To ensure that adjacent independent temperature zones 11 are not affected, each independent temperature zone 11 is separated by a heat insulation baffle 12. The heat insulation baffle 12 is adapted to slide in the vertical direction. A first position sensor 13 and a second position sensor 14 are respectively provided on both sides of the heat insulation baffle 12. The first position sensor 13 is configured to detect the distance between the photovoltaic module 5 closest to the incoming material direction and the heat insulation baffle 12. The second position sensor 14 is configured to detect whether the photovoltaic module 5 passes through the heat insulation baffle 12. The heat insulation baffle 12 is configured to open when the photovoltaic module 5 passes through and close after the photovoltaic module 5 passes through.

[0029] Of course, since the conveying mechanism 4 runs through the entire vacuum chamber 1, the heat insulation baffle 12 cannot be set to completely seal the adjacent independent temperature zone 11. However, the gap between its end and the conveying mechanism 4 can be controlled to be extremely small. This gap will not cause interference with the temperature of the adjacent independent temperature zone 11. The specific gap setting can be adjusted by those skilled in the art. In addition, in order to achieve complete sealing of the adjacent independent temperature zone 11 by the heat insulation baffle 12, the specific structure of the conveying mechanism 4 can also be adjusted in other embodiments. Although the entire conveying mechanism 4 still runs through the entire vacuum chamber 1, it is separated at the baffle position, that is, there is a small section without a conveying zone. At this time, the setting of the support platform 42 needs to be adjusted. It cannot be fixed to the conveyor belt 41. In order for it to cross the non-conveying zone smoothly, its size needs to be greater than the width of the non-conveying zone. This solution can also achieve the separation of the adjacent independent temperature zone 11 and the smooth flow of the photovoltaic module 5. The specific parameter settings can be adjusted by those skilled in the art.

[0030] In this embodiment, the independent temperature zone 11 includes at least a first curing zone 111, a second curing zone 112, and a third curing zone 113 arranged in sequence. The temperature in the first curing zone 111 is lower than the temperature in the second curing zone 112, and the temperature in the second curing zone 112 is higher than the temperature in the third curing zone 113. A preheating zone 114 is also provided in the vacuum chamber 1, and the preheating zone 114 is located in the preceding position of the first curing zone 111.

[0031] The temperature of each zone needs to be preset. In one embodiment, the temperature range of the preheating zone 114 can be set to a value between 50℃ and 70℃, for example, 60℃; the temperature range of the first curing zone 111 can be set to a value between 80℃ and 100℃, for example, 90℃; the temperature range of the second curing zone 112 can be set to a value between 100℃ and 120℃, for example, 110℃; and the temperature range of the third curing zone 113 can be set to a value between 70℃ and 90℃, for example, 80℃. As for the specific temperature settings in actual applications, they need to be set as needed by those skilled in the art, taking into account the composition of the coating solution and the specific working conditions.

[0032] In this embodiment, the microwave generator 6 acts at least within the second curing zone 112, and is configured to provide uniform microwave radiation to the photovoltaic module 5 within the corresponding independent temperature zone 11, so as to avoid local overheating of the coating layer of the photovoltaic module 5 and affect the quality of the coating layer.

[0033] The temperature control module 2 includes a heating unit 21 and a cooling unit 22. The heating unit 21 is disposed on the outer side of the cavity wall of the vacuum chamber 1 and is configured to provide stable heat to the corresponding independent temperature zone 11. The cooling unit 22 is disposed on the outer side of the cavity wall of the vacuum chamber 1 and is configured to uniformly cool the interior of the independent temperature zone 11. The heating unit 21 includes heating elements that are uniformly attached to the outer side of the cavity wall of the vacuum chamber 1 with gaps between adjacent heating elements. The cooling unit 22 includes cooling pipes that are uniformly laid in the gaps.

[0034] In this embodiment, the conveying mechanism 4 is located at the bottom of the vacuum chamber 1. It includes a unidirectional conveyor belt 41 with a plurality of support platforms 42 on the conveyor belt 41. The support platforms 42 are configured to support and fix the photovoltaic module 5 when they are inside the vacuum chamber 1, and to release the fixation of the photovoltaic module 5 after they pass through the vacuum chamber 1. The specific fixing method can be, for example, vacuum adsorption or mechanical locking. The specific configuration can be adjusted by those skilled in the art according to actual needs. For example, the support platform 42 can be equipped with a vacuum adsorption device. The vacuum adsorption device is configured to adsorb and fix the photovoltaic module 5 when the support platform 42 is inside the vacuum chamber 1, and to release the adsorption of the photovoltaic module 5 after the support platform 42 passes through the vacuum chamber 1.

[0035] The above settings ensure the stability of the photovoltaic module 5 during the curing process, and allow the entire equipment to be set up on an assembly line, where the cured photovoltaic module 5 can be picked up and transferred by a robotic arm.

[0036] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A coating apparatus for self-cleaning photovoltaic modules, characterized in that, The system includes: a vacuum chamber containing several independent temperature zones, each of which is equipped with an independent temperature control module and a temperature sensor; a conveying mechanism extending through the vacuum chamber, adapted to carry and transport photovoltaic modules sequentially through the independent temperature zones; a microwave generator mounted on the vacuum chamber with its working end facing the conveying mechanism; and a control module configured to dynamically adjust the temperature of each temperature control module corresponding to the independent temperature zone based on signals fed back from the temperature sensors using a PID algorithm, and to control the start and stop of the microwave generator.

2. The coating apparatus for a self-cleaning photovoltaic module according to claim 1, wherein Each of the independent temperature zones is separated by a heat insulation baffle, which is adapted to slide in the vertical direction. A first position sensor and a second position sensor are respectively provided on both sides of the heat insulation baffle. The first position sensor is configured to detect the distance between the photovoltaic module closest in the incoming material direction and the heat insulation baffle. The second position sensor is configured to detect whether the photovoltaic module passes through the heat insulation baffle. The heat insulation baffle is configured to open when the photovoltaic module passes through and close after the photovoltaic module passes through.

3. The coating apparatus for self-cleaning photovoltaic modules according to claim 1, wherein The independent temperature zone includes at least a first curing zone, a second curing zone, and a third curing zone arranged in sequence. The temperature in the first curing zone is lower than the temperature in the second curing zone, and the temperature in the second curing zone is higher than the temperature in the third curing zone.

4. The coating apparatus for a self-cleaning photovoltaic module according to claim 3, wherein The vacuum chamber is also provided with a preheating zone, which is located in the sequence preceding the first curing zone.

5. The coating apparatus for a self-cleaning photovoltaic module of claim 1, wherein, The temperature control module includes a heating unit and a cooling unit. The heating unit is located on the outer side of the cavity wall of the vacuum chamber and is configured to provide stable heat to the corresponding independent temperature zone. The cooling unit is located on the outer side of the cavity wall of the vacuum chamber and is configured to uniformly cool the interior of the independent temperature zone.

6. The coating apparatus for a self-cleaning photovoltaic module according to claim 5, wherein The heating unit includes heating elements that are evenly attached to the outer side of the cavity wall of the vacuum chamber, with gaps between adjacent heating elements. The cooling unit includes cooling pipes that are evenly laid in the gaps.

7. The coating apparatus for a self-cleaning photovoltaic module according to claim 1, wherein The temperature sensor is mounted on the vacuum chamber, with its detection end extending into the corresponding independent temperature zone and facing the photovoltaic module.

8. The coating equipment for a self-cleaning photovoltaic module as described in claim 1, characterized in that, The conveying mechanism is located at the bottom of the vacuum chamber and includes a unidirectional conveyor belt with several support platforms on it. The support platforms are configured to support and fix the photovoltaic module when they are inside the vacuum chamber, and to release the fixation of the photovoltaic module after they pass through the vacuum chamber.

9. The coating equipment for a self-cleaning photovoltaic module as described in claim 8, characterized in that, A vacuum adsorption device is provided on the support platform. The vacuum adsorption device is configured to adsorb and fix the photovoltaic module when the support platform is in the vacuum cavity, and to release the adsorption on the photovoltaic module when the support platform passes through the vacuum cavity.

10. The coating equipment for a self-cleaning photovoltaic module as described in claim 3, characterized in that, The microwave generator operates at least within the second curing zone and is configured to provide uniform microwave radiation to the photovoltaic modules within the corresponding independent temperature zones.

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