Photovoltaic module and method of encapsulating the same

Abstract

The present application relates to a kind of photovoltaic module and its packaging method, the packaging method of photovoltaic module includes the following steps: providing positive plate, back plate, cell module and fixed plate;Cell module is embedded in step portion;Positive plate is stacked on one side of cell module, and back plate is stacked on the other side of cell module;Positive plate, cell module and back plate after stacking are inclined;Organic silicone glue is injected into first glue cavity by first glue injection port, and organic silicone glue is injected into second glue cavity by second glue injection port, and photovoltaic module is obtained.The packaging method of photovoltaic module provided by the present application, the quick positioning of positive plate, cell module and back plate is completed by fixed plate, can prevent the position deviation in packaging process, and organic silicone glue is injected into first glue cavity and second glue cavity simultaneously, and the adhesion packaging of positive plate, cell module and back plate can be completed once, can improve the packaging efficiency and packaging quality of photovoltaic module.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic solar energy technology, and in particular to a photovoltaic component and a packaging method thereof. Background Art

[0002] Energy is one of the material foundations of human survival and development. Its availability and usage directly impact social progress. However, today's human society faces an unprecedented energy crisis. Therefore, renewable energy sources such as solar and wind power are the only means to address energy and environmental challenges. Solar energy is an excellent renewable energy source from the perspectives of energy efficiency, social, and environmental considerations. Solar cell modules (also called photovoltaic modules) are the core component of solar power generation systems, converting solar energy into electricity for storage in batteries or to power loads.

[0003] Currently, the primary packaging method for solar cell modules involves sequentially laminating and bonding the front panel, battery module, and back panel using EVA / PVB film under high temperature and high pressure. This encapsulation process for solar cell modules requires high equipment requirements and a long production cycle. Furthermore, due to inherent issues with the EVA / PVB film itself, its light transmittance is only 90%. Over long-term use, the EVA / PVB film, due to poor packaging, can become exposed to air, causing it to age and yellow, leading to a decrease in the performance and lifespan of the solar cell module. Furthermore, during the manual lamination and bonding of the front panel, battery module, and back panel, these components are prone to positional shifts, requiring frequent adjustments to their bonding position. This severely impacts the EVA / PVB film's adhesion and can even render the solar cell module useless due to poor bonding. Summary of the Invention

[0004] Based on this, it is necessary to provide a photovoltaic module and its packaging method to address the problems that the performance and service life of existing solar cell modules are relatively short, and the positions of the structures are easily offset during the bonding process.

[0005] A method for packaging a photovoltaic module comprises the following steps:

[0006] S110: Providing a front panel, a back panel, a battery module, and a fixing panel. The fixing panel has a step portion at its edge and a first glue injection port and a second glue injection port on its side. The first glue injection port and the second glue injection port are located on the same side of the fixing panel.

[0007] S120: embedding the battery module in the step portion;

[0008] S130: Laminating the positive plate on one side of the battery module and forming a first glue injection cavity between the positive plate and the battery module; laminating the back plate on the other side of the battery module and forming a second glue injection cavity between the back plate and the battery module;

[0009] S140: Tilt the stacked front plate, the battery module, and the back plate;

[0010] S150: Injecting organic silicone into the first injection cavity through the first injection port to glue the front plate to the battery module, and injecting organic silicone into the second injection cavity through the second injection port to glue the back plate to the battery module to obtain a photovoltaic module.

[0011] The above-mentioned packaging method of the photovoltaic module first provides a front plate, a back plate, a battery module and a fixing plate, then embeds the battery module in the step portion to fix the battery module on the fixing plate, then stacks the front plate on one side of the battery module and the back plate on the other side of the battery module to complete the limited fixation between the front plate, the battery module and the back plate, continues to tilt the stacked front plate, the battery module and the back plate, and finally injects organic silica gel into the first injection cavity through the first injection port and injects organic silica gel into the second injection cavity through the second injection port, and stacks and bonds the front plate, the battery module and the back plate together in sequence through the organic silica gel to obtain a photovoltaic module. The packaging method of the photovoltaic module provided by the present invention completes the rapid positioning and stacking of the front plate, the battery module and the back plate through the fixing plate, can prevent the position deviation of the front plate, the battery module and the back plate during the packaging process, and injects organic silica gel into the first injection cavity and the second injection cavity, so that the bonding and packaging of the front plate, the battery module and the back plate can be completed in one go, which can improve the packaging efficiency and packaging quality of the photovoltaic module, thereby improving the performance and service life of the photovoltaic module.

[0012] In one embodiment, the step S150 further includes:

[0013] S160: performing an aging treatment on the organic silicone filled into the first glue injection cavity and the second glue injection cavity to form a first silicone layer in the first glue injection cavity and a second silicone layer in the second glue injection cavity.

[0014] In one embodiment, the step S160 is specifically as follows:

[0015] The positive plate, the battery module and the back plate filled with organic silica gel are placed in a temperature range of 65°C-75°C and an air pressure range of -100KPa--70KPa for 3 minutes to 15 minutes to age the organic silica gel filled in the first and second injection cavities.

[0016] In one embodiment, the light transmittance of the first silicone layer is greater than the light transmittance of the second silicone layer.

[0017] In one embodiment, the thickness of the first silicone layer is 0.35 mm-0.8 mm, and the thickness of the second silicone layer is 0.35 mm-0.8 mm.

[0018] In one embodiment, the step S160 further includes:

[0019] S170: Coating a first sealant circumferentially at a connection between the front plate and the battery module, and coating a second sealant circumferentially at a connection between the back plate and the battery module;

[0020] S180: Curing the first sealant and the second sealant.

[0021] In one embodiment, the step S140 further includes:

[0022] S141: providing a glue injection machine, and connecting the glue injection machine to the first glue injection port and the second glue injection port;

[0023] The execution order of step S140 and step S141 can be swapped.

[0024] A photovoltaic module is manufactured using the photovoltaic module packaging method described in any one of the above technical solutions.

[0025] The above-mentioned photovoltaic module uses a fixing plate to complete the rapid positioning and stacking of the front panel, battery module and back panel, which can prevent the position displacement of the front panel, battery module and back panel during the packaging process, and injects organic silica gel into the first injection cavity and the second injection cavity, so as to complete the bonding and packaging of the front panel, battery module and back panel at one time, which can improve the packaging efficiency and packaging quality of the photovoltaic module, thereby improving the performance and service life of the photovoltaic module.

[0026] In one embodiment, a first exhaust port and a second exhaust port are further provided on the side surface of the fixing plate. The first exhaust port is connected to the first glue injection cavity, and the second exhaust port is connected to the second glue injection cavity.

[0027] In one embodiment, there are multiple first glue injection ports and multiple second glue injection ports, and there are multiple first exhaust ports and multiple second exhaust ports. The multiple first exhaust ports are all located on the side of the fixed plate away from the first glue injection port, and the multiple second exhaust ports are all located on the side of the fixed plate away from the second glue injection port. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic flow chart of a method for packaging a photovoltaic module according to an embodiment of the present invention;

[0029] Figure 2 A schematic flow chart of a method for packaging a photovoltaic module according to an embodiment of the present invention;

[0030] Figure 3 This is an exploded schematic diagram of the photovoltaic module provided by the present invention;

[0031] Figure 4 A schematic structural diagram of a fixing plate provided by the present invention;

[0032] Figure 5 for Figure 4 A partial enlarged view of area A in the middle;

[0033] Figure 6 for Figure 4 A partial enlarged view of area B in the middle.

[0034] Reference numerals:

[0035] 100. Photovoltaic modules;

[0036] 110. Positive plate; 120. Back plate; 130. Battery module; 140. Fixing plate; 141. Step portion; 142. First glue injection port; 143. Second glue injection port; 144. First exhaust port; 145. Second exhaust port; 150. First silicone layer; 160. Second silicone layer; 170. First sealant; 180. Second sealant. DETAILED DESCRIPTION

[0037] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0040] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0041] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0042] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0043] The technical solutions provided by the embodiments of the present invention are described below with reference to the accompanying drawings.

[0044] like Figures 1-4 As shown, the present invention provides a packaging method for a photovoltaic module 100 , and the packaging method for the photovoltaic module 100 includes the following steps.

[0045] Step S110: Provide a front panel 110, a back panel 120, a battery module 130, and a fixing plate 140. The fixing plate 140 is provided with a step portion 141 at its edge, and a first glue injection port 142 and a second glue injection port 143 are provided on the side of the fixing plate 140. The first glue injection port 142 and the second glue injection port 143 are located on the same side of the fixing plate 140. In this embodiment, the fixing plate 140 has a hollow frame structure, that is, the fixing plate 140 is hollowed out to reduce the overall weight of the encapsulated photovoltaic module 100, achieve a lightweight design of the photovoltaic module 100, and facilitate operations such as transporting and installing the photovoltaic module 100.

[0046] Step S120 : embedding the battery module 130 in the step portion 141 to fix the battery module 130 on the fixing plate 140 .

[0047] Step S130: The positive plate 110 is stacked on one side of the battery module 130, and a first glue injection cavity is formed between the positive plate 110 and the battery module 130. The back plate 120 is stacked on the other side of the battery module 130, and a second glue injection cavity is formed between the back plate 120 and the battery module 130. Specifically, the battery module 130 has two opposing sides along the thickness direction of the fixing plate 140. The positive plate 110 is stacked on one side of the battery module 130, and the back plate 120 is stacked on the other side of the battery module 130, thereby completing the pre-packaging of the positive plate 110, the battery module 130, and the back plate 120. Preferably, the positive plate 110 and the back plate 120 are also embedded in the step portion 141. The step portion 141 can position the positive plate 110, the battery module 130 and the back plate 120 to prevent the positive plate 110, the battery module 130 and the back plate 120 from being offset during the packaging process. There is no need to manually align or correct the relative positions of the positive plate 110, the battery module 130 and the back plate 120. The packaging of the positive plate 110, the battery module 130 and the back plate 120 can be completed at one time.

[0048] Step S140: Tilt the stacked front panel 110, battery module 130, and back panel 120. The tilted front panel 110, battery module 130, and back panel 120 must ensure that both the first glue injection port 142 and the second glue injection port 143 are located at a higher point on the fixed plate 140. It should be noted that the term "higher point" in the present invention means that when the stacked front panel 110, battery module 130, and back panel 120 are tilted and placed on a work surface, the vertical distance from the higher point of the fixed plate 140 to the work surface is greater than the vertical distance from any other point to the work surface.

[0049] Step S150: inject organic silicone into the first injection cavity through the first injection port 142 to glue the front panel 110 to the battery module 130, and inject organic silicone into the second injection cavity through the second injection port 143 to glue the back panel 120 to the battery module 130 to obtain the photovoltaic module 100. Specifically, when the positive plate 110, the battery module 130 and the back plate 120 are arranged in an inclined stack, the first glue injection port 142 and the second glue injection port 143 can be both located at a high position of the fixed plate 140. Since the organic silicone has fluidity, under the action of gravity, the organic silicone injected through the first glue injection port 142 can be filled into the first glue injection cavity, and the organic silicone injected through the second glue injection port 143 can be filled into the second glue injection cavity. At the same time, the positive plate 110, the battery module 130 and the back plate 120 are bonded and packaged together, thereby improving the packaging efficiency of the photovoltaic module 100 and ensuring that the pressure on both sides of the battery module 130 is consistent, thereby avoiding the undesirable phenomenon that the battery module 130 is displaced toward the other side due to excessive pressure on one side.

[0050] The packaging method of the above-mentioned photovoltaic module 100 first provides a front plate 110, a back plate 120, a battery module 130 and a fixing plate 140, and then embeds the battery module 130 in the step portion 141 to fix the battery module 130 on the fixing plate 140, then stacks the front plate 110 on one side of the battery module 130, and stacks the back plate 120 on the other side of the battery module 130, completing the limited fixation between the front plate 110, the battery module 130 and the back plate 120, and continues to tilt the stacked front plate 110, the battery module 130 and the back plate 120, and finally injects organic silicone into the first glue injection cavity through the first glue injection port 142, and injects organic silicone into the second glue injection cavity through the second glue injection port 143, and stacks and bonds the front plate 110, the battery module 130 and the back plate 120 in sequence through the organic silicone to obtain the photovoltaic module 100. The packaging method of the photovoltaic module 100 provided by the present invention completes the rapid positioning and stacking of the front panel 110, the battery module 130 and the back panel 120 through the fixing plate 140, which can prevent the position displacement of the front panel 110, the battery module 130 and the back panel 120 during the packaging process, and injects organic silica gel into the first injection cavity and the second injection cavity, so that the bonding and packaging of the front panel 110, the battery module 130 and the back panel 120 can be completed in one time, which can improve the packaging efficiency and packaging quality of the photovoltaic module 100, thereby improving the performance and service life of the photovoltaic module 100.

[0051] Further, if Figure 1-Figure 3 As shown, after step S150, the following steps are also included:

[0052] Step S160: The organic silicone filled into the first injection cavity and the second injection cavity is subjected to an aging treatment to form a first silicone layer 150 in the first injection cavity and a second silicone layer 160 in the second injection cavity. When the organic silicone filled into the first injection cavity and the second injection cavity is subjected to an aging treatment, the organic silicone in the first injection cavity and the second injection cavity can be rapidly solidified to form a first silicone layer 150 in the first injection cavity and a second silicone layer 160 in the second injection cavity, and the positive plate 110, the battery module 130 and the back plate 120 are quickly bonded and packaged into one. Traditionally, the positive plate, the battery module and the back plate are stacked and bonded in sequence using EVA / PVB film. The EVA / PVB film needs to be hot-melted and cured under high temperature and high pressure to complete the bonding operation of the positive plate, the battery module and the back plate, which places relatively stringent requirements on production conditions and production equipment. In this embodiment, the first silicone layer 150 and the second silicone layer 160 do not need to undergo a hot melt treatment similar to EVA / PVB film. The bonding operation between the positive plate 110, the battery module 130 and the back plate 120 can be completed by simply curing the first silicone layer 150 and the second silicone layer 160, which has low requirements for production equipment.

[0053] Specifically, if Figure 1-Figure 3 As shown, step S160 specifically involves placing the silicone-filled front panel 110, battery module 130, and back panel 120 in a temperature range of 65°C to 75°C and an air pressure range of -100 kPa to -70 kPa for 3 to 15 minutes to age the silicone filled in the first and second injection cavities. The silicone-filled front panel 110, battery module 130, and back panel 120 are placed in an airbag laminating machine and hot-pressed under high temperature and negative pressure to complete the bonding process. This reduces the production conditions and equipment requirements for the photovoltaic module 100 and shortens the production cycle of the photovoltaic module 100.

[0054] In the specific setting, the positive plate 110, the battery module 130 and the back plate 120 filled with organic silicone can be placed under one of the temperature conditions of 65°C, 67°C, 70°C, 72°C and 75°C, and the positive plate 110, the battery module 130 and the back plate 120 filled with organic silicone can be placed under one of the air pressure conditions of -100KPa, -95KPa, -90KPa, -85KPa, -80KPa, -75KPa and -70KPa, and the positive plate 110, the battery module 130 and the back plate 120 filled with organic silicone can be left to stand for one of the time values ​​of 3min, 5min, 7min, 10min, 12min and 15min under this temperature and air pressure range. Of course, the aging temperature, aging pressure and aging time of the positive plate 110, battery module 130 and back plate 120 filled with organic silicone are not limited to the specific values ​​provided above, and can also be other values. The present invention does not limit the specific aging temperature, aging pressure and aging time of the positive plate 110, battery module 130 and back plate 120 filled with organic silicone.

[0055] In order to improve the light-to-electricity conversion efficiency and service life of the photovoltaic module 100, a preferred embodiment is as follows: Figure 1-Figure 3As shown, the transmittance of the first silicone layer 150 is greater than the transmittance of the second silicone layer 160. In this embodiment, the front plate 110 is a tempered glass plate, and the back plate 120 is also a tempered glass plate. On the basis of ensuring the structural strength of the front plate 110 and the back plate 120, it is ensured that light can pass through the front plate 110 and the back plate 120 and be projected onto the battery module 130, so that the battery module 130 can convert solar energy into electrical energy for storage or drive the load to work. Traditionally, the front plate, battery module and back plate are stacked and bonded in sequence using EVA / PVB film. Due to the low transmittance of EVA / PVB film, less light is projected onto the battery module, and the light-to-electricity conversion efficiency of the battery module is too low. In addition, the EVA / PVB film will be exposed to the air due to loose packaging, causing the EVA / PVB film to age and turn yellow, resulting in the performance and service life of the solar cell module to decline. In this embodiment, the first silicone layer 150 is formed by curing an organic silicone with a 99% light transmittance, while the second silicone layer 160 is formed by curing an organic silicone with a 95% light transmittance. The high light transmittance of the first and second silicone layers 150, 160 increases the amount of light projected onto the battery module 130, thereby improving the light-to-electricity conversion efficiency of the battery module 130. Furthermore, since light is primarily projected toward the front panel 110, the light transmittance of the first silicone layer 150 is set to be greater than that of the second silicone layer 160. This ensures sufficient light is projected onto the battery module 130, thereby reducing the manufacturing cost of the photovoltaic module 100. Furthermore, the first and second silicone layers 150, 160, exhibit strong resistance to yellowing, significantly improving the performance and lifespan of the photovoltaic module 100.

[0056] In order to ensure the bonding strength between the positive plate 110 and the battery module 130, and the bonding strength between the back plate 120 and the battery module 130, a preferred embodiment is as follows: Figure 1-Figure 3As shown, the thickness of the first silicone layer 150 is 0.35mm-0.8mm. If the first silicone layer 150 is too thin, the amount of adhesive applied between the positive plate 110 and the battery module 130 may be insufficient, resulting in low adhesion between the positive plate 110 and the battery module 130, which may easily lead to separation between the positive plate 110 and the battery module 130. If the first silicone layer 150 is too thick, due to the high temperature and sunlight environment of the first silicone layer 150, the first silicone layer 150 may easily delaminate during long-term use, causing separation between the positive plate 110 and the battery module 130. Setting the thickness of the first silicone layer 150 to 0.35mm-0.8mm ensures sufficient adhesion between the positive plate 110 and the battery module 130 while preventing delamination of the first silicone layer 150 during long-term use. Similarly, the thickness of the second silicone layer 160 is also 0.35mm-0.8mm. If the second silicone layer 160 is too thin, the amount of glue applied between the backplate 120 and the battery module 130 may be too little, resulting in low adhesion between the backplate 120 and the battery module 130, which may easily lead to separation between the backplate 120 and the battery module 130. If the second silicone layer 160 is too thick, the second silicone layer 160 may delaminate during long-term use, as it operates in a high-temperature, sunny environment. This may cause separation between the backplate 120 and the battery module 130. Setting the thickness of the second silicone layer 160 to 0.35 mm to 0.8 mm ensures sufficient adhesion between the backplate 120 and the battery module 130, while preventing delamination of the second silicone layer 160 during long-term use.

[0057] In specific configurations, the thickness of the first silicone layer 150 can be set to one of 0.35 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, and 0.8 mm. Furthermore, the thickness of the first silicone layer 150 is not limited to the specific values ​​provided above, but can also be other values ​​within the range of 0.35 mm to 0.8 mm. Of course, in situations where the bonding strength between the positive plate 110 and the battery module 130 is not required to be high, the thickness of the first silicone layer 150 can also be a value outside the range of 0.35 mm to 0.8 mm. Similarly, the thickness of the second silicone layer 160 can be set to one of 0.35 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, and 0.8 mm. Furthermore, the thickness of the second silicone layer 160 is not limited to the specific values ​​provided above, but can also be other values ​​within the range of 0.35 mm to 0.8 mm. Of course, when the bonding strength requirement between the back plate 120 and the battery module 130 is not high, the thickness of the second silicone layer 160 can also be a value outside the range of 0.35 mm-0.8 mm.

[0058] In order to improve the sealing reliability of the photovoltaic module 100, a preferred embodiment is as follows: Figure 1-Figure 3 As shown, the following steps are also included after step S160.

[0059] Step S170: Apply a first sealant 170 circumferentially to the connection between the front plate 110 and the battery module 130, and apply a second sealant 180 circumferentially to the connection between the back plate 120 and the battery module 130. The first sealant 170 is a hot melt adhesive or a structural adhesive, and the second sealant 180 is also a hot melt adhesive or a structural adhesive.

[0060] Step S180 : curing the first sealant 170 and the second sealant 180 .

[0061] In the packaging method of the above-mentioned photovoltaic module 100, since a gap will inevitably exist between the positive plate 110 and the battery module 130 during the packaging process, the first sealant 170 is circumferentially applied to the connection between the positive plate 110 and the battery module 130. The cured first sealant 170 can fill the gap between the positive plate 110 and the battery module 130, so that when the photovoltaic module 100 works in a natural environment, rainwater, snow water and other impurities are prevented from entering the interior of the photovoltaic module 100 through the gap between the positive plate 110 and the battery module 130. By improving the sealing reliability of the photovoltaic module 100, the service life of the first silicone layer 150 and the battery module 130 is further improved. Similarly, since there will inevitably be a gap between the backplate 120 and the battery module 130 during the packaging process, by circumferentially applying the second sealant 180 at the connection between the backplate 120 and the battery module 130, the cured second sealant 180 can fill the gap between the backplate 120 and the battery module 130, so that when the photovoltaic module 100 is working in a natural environment, rainwater, snow water and other impurities can be prevented from entering the interior of the photovoltaic module 100 through the gap between the backplate 120 and the battery module 130. By improving the sealing reliability of the photovoltaic module 100, the service life of the second silicone layer 160 and the battery module 130 is thereby improved.

[0062] In order to perform the glue injection operation in the first glue injection cavity and the second glue injection cavity, a preferred embodiment is as follows: Figures 1-4 As shown, after step S140, the following steps are also included:

[0063] Step S141: A glue injection machine is provided and connected to the first glue injection port 142 and the second glue injection port 143. When the glue injection machine is turned on, organic silica gel is injected into the first glue injection cavity through the first glue injection port 142 to glue the positive plate 110 to the battery module 130. Organic silica gel is injected into the second glue injection cavity through the second glue injection port 143 to glue the back plate 120 to the battery module 130.

[0064] The execution order of step S140 and step S141 can be swapped and can be selected according to the specific process and user needs, and the present invention does not impose any limitation.

[0065] In addition, if Figures 1-4 As shown, the present invention further provides a photovoltaic module 100. The photovoltaic module 100 is manufactured by using the packaging method of the photovoltaic module 100 according to any one of the above technical solutions.

[0066] The above-mentioned photovoltaic module 100 completes the rapid positioning and stacking of the front panel 110, the battery module 130 and the back panel 120 through the fixing plate 140, which can prevent the position displacement of the front panel 110, the battery module 130 and the back panel 120 during the packaging process, and injects organic silica gel into the first injection cavity and the second injection cavity, so that the bonding and packaging of the front panel 110, the battery module 130 and the back panel 120 can be completed in one time, which can improve the packaging efficiency and packaging quality of the photovoltaic module 100, thereby improving the performance and service life of the photovoltaic module 100.

[0067] In order to improve the packaging quality of the photovoltaic module 100, a preferred embodiment is as follows: Figure 3-Figure 6 As shown, the side of the fixing plate 140 is further provided with a first exhaust port 144 and a second exhaust port 145. The first exhaust port 144 is connected to the first glue injection cavity, and the second exhaust port 145 is connected to the second glue injection cavity. When organic silica gel is injected into the first glue injection cavity through the first glue injection port 142, due to the fluidity of the organic silica gel, under the action of gravity, the organic silica gel flows and fills the entire first glue injection cavity. During the flow of the organic silica gel, the gas in the first glue injection cavity can be discharged to the outside through the first exhaust port 144, preventing the gas from remaining in the organic silica gel and forming undesirable phenomena such as aerosol and glue deficiency in the first silicone layer 150, thereby improving the bonding quality between the positive plate 110 and the battery module 130. Similarly, when organic silicone is injected into the second injection cavity through the second injection port 143, due to the fluidity of the organic silicone, under the action of gravity, the organic silicone flows and fills the entire second injection cavity. During the flow of the organic silicone, the gas in the second injection cavity can be discharged to the outside through the second exhaust port 145 to prevent the gas from remaining inside the organic silicone and forming adverse phenomena such as aerosol and glue deficiency in the second silicone layer 160, thereby improving the bonding quality between the back panel 120 and the battery module 130.

[0068] In order to improve the packaging efficiency of the photovoltaic module 100, a preferred embodiment is as follows: Figure 3-Figure 6As shown, there are multiple first injection ports 142 and multiple second injection ports 143, and multiple first exhaust ports 144 and multiple second exhaust ports 145. By having multiple first injection ports 142 and multiple second injection ports 143, the amount of organic silicone injected into the first injection cavity through the first injection port 142 per unit time and the amount of organic silicone injected into the second injection cavity through the second injection port 143 per unit time can be increased. Since the amount of organic silicone introduced into the first injection cavity and the second injection cavity per unit time increases, the flow rate of the organic silicone in the first injection cavity and the second injection cavity is accelerated. At this time, the gas in the first injection cavity and the second injection cavity can be quickly discharged through the multiple first exhaust ports 144 and the multiple second exhaust ports 145, thereby preventing defects such as aeration and lack of glue from occurring in the first silicone layer 150 and the second silicone layer 160, thereby improving the packaging efficiency of the photovoltaic module 100.

[0069] Furthermore, the plurality of first exhaust ports 144 are all located on the side of the fixing plate 140 away from the first glue injection port 142, and the plurality of second exhaust ports 145 are all located on the side of the fixing plate 140 away from the second glue injection port 143. When silicone rubber is injected into the first and second glue injection cavities, the silicone rubber squeezes the gas in the first glue injection cavity and causes it to gather at a location away from the first glue injection port 142, while the gas in the second glue injection cavity and causes it to gather at a location away from the second glue injection port 143. Since the plurality of first exhaust ports 144 are all located on the side of the fixing plate 140 away from the first glue injection port 142, and the plurality of second exhaust ports 145 are all located on the side of the fixing plate 140 away from the second glue injection port 143, the gas gathered in the first and second glue injection cavities can be quickly exhausted, thereby improving the packaging quality of the photovoltaic module 100 while increasing the packaging efficiency of the photovoltaic module 100.

[0070] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A method for packaging a photovoltaic module, characterized in that: The following steps are involved: S110: Providing a front panel, a back panel, a battery module, and a fixing panel. The fixing panel has a step portion at its edge and a first glue injection port and a second glue injection port on its side. The first glue injection port and the second glue injection port are located on the same side of the fixing panel. S120: embedding the battery module in the step portion; S130: Laminating the positive plate on one side of the battery module and forming a first glue injection cavity between the positive plate and the battery module; laminating the back plate on the other side of the battery module and forming a second glue injection cavity between the back plate and the battery module; S140: Tilt the stacked front plate, the battery module, and the back plate; S150: Injecting organic silicone into the first injection cavity through the first injection port to glue the front plate to the battery module, and injecting organic silicone into the second injection cavity through the second injection port to glue the back plate to the battery module to obtain a photovoltaic module.

2. The method for packaging a photovoltaic module according to claim 1, wherein: After step S150, the following steps are further included: S160: performing an aging treatment on the organic silicone filled into the first glue injection cavity and the second glue injection cavity to form a first silicone layer in the first glue injection cavity and a second silicone layer in the second glue injection cavity.

3. The method for packaging a photovoltaic module according to claim 2, wherein: The step S160 is specifically as follows: The positive plate, the battery module and the back plate filled with organic silica gel are placed in a temperature range of 65°C-75°C and an air pressure range of -100KPa--70KPa for 3 minutes to 15 minutes to age the organic silica gel filled in the first and second injection cavities.

4. The method for packaging a photovoltaic module according to claim 2, wherein: The light transmittance of the first silicone layer is greater than the light transmittance of the second silicone layer.

5. The method for packaging a photovoltaic module according to claim 2, wherein: The thickness of the first silicone layer is 0.35 mm to 0.8 mm, and the thickness of the second silicone layer is 0.35 mm to 0.8 mm.

6. The method for packaging a photovoltaic module according to claim 2, wherein: After step S160, the following steps are further included: S170: Coating a first sealant circumferentially at a connection between the front plate and the battery module, and coating a second sealant circumferentially at a connection between the back plate and the battery module; S180: Curing the first sealant and the second sealant.

7. The method for packaging a photovoltaic module according to claim 1, wherein: After step S140, the following steps are further included: S141: providing a glue injection machine, and connecting the glue injection machine to the first glue injection port and the second glue injection port; The execution order of step S140 and step S141 can be swapped.

8. A photovoltaic module, characterized in that: The photovoltaic module is manufactured by the photovoltaic module packaging method according to any one of claims 1 to 7.

9. The photovoltaic module according to claim 8, characterized in that: A first exhaust port and a second exhaust port are further provided on the side surface of the fixing plate. The first exhaust port is communicated with the first glue injection cavity, and the second exhaust port is communicated with the second glue injection cavity.

10. The photovoltaic module according to claim 9, characterized in that: There are multiple first glue injection ports and multiple second glue injection ports, and there are multiple first exhaust ports and multiple second exhaust ports. The multiple first exhaust ports are all located on the side of the fixed plate away from the first glue injection port, and the multiple second exhaust ports are all located on the side of the fixed plate away from the second glue injection port.

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