Photovoltaic module and method of manufacturing the same

Abstract

The present disclosure relates to a photovoltaic module and a manufacturing method thereof, wherein the photovoltaic module comprises a main component (10) comprising a glass plate (1) and a cell layer (3), the glass plate (1) being arranged on a first side of the cell layer (3) along a thickness direction of the photovoltaic module; and a flexible cover (5) having an opening (A) for placing the main component (10) therein; wherein the main component (10) is located in the flexible cover (5), and a wall surface of the flexible cover (5) opposite to the opening (A) at least partially covers a second side of the cell layer (3) along the thickness direction. The photovoltaic module sets the main component as a whole structure in the flexible cover, and the flexible cover protects the main component, so that the problem of easy breakage of the photovoltaic module during transportation and installation can be solved, and the photovoltaic module is not easy to be damaged when falling; and the overall weight of the photovoltaic module can be reduced, and the cost can be lowered.

Description

Technical Field

[0001] This disclosure relates to the field of photovoltaic technology, and in particular to a photovoltaic module and a method for manufacturing the same. Background Technology

[0002] Currently, there are two main types of crystalline silicon photovoltaic modules: single-glass modules and double-glass modules. Compared with single-glass modules, double-glass modules have advantages such as a longer lifespan, lower water vapor transmission rate and no potential-induced degradation, as well as good insulation and water vapor transmission resistance. However, because double-glass modules use rigid glass as the packaging medium, the glass is fragile and heavy, making the photovoltaic modules prone to breakage during production and transportation, and also increasing costs. Summary of the Invention

[0003] The embodiments of this disclosure provide a photovoltaic module and a method for manufacturing the same, which makes the photovoltaic module less prone to breakage.

[0004] Embodiments of this disclosure provide a photovoltaic module, comprising:

[0005] The main components include a glass plate and a solar cell layer, with the glass plate positioned along the thickness direction of the photovoltaic module on the first side of the solar cell layer; and

[0006] A flexible cover with an opening for inserting the main body component;

[0007] The main component is located inside a flexible cover, and the wall of the flexible cover opposite the opening at least partially covers the second side of the battery cell layer along the thickness direction.

[0008] In some embodiments, the flexible cover is connected to the glass plate at the opening.

[0009] In some embodiments, the flexible cover includes:

[0010] The first part, at least partially covering the second side of the battery cell layer; and

[0011] The second part is connected to the entire outer periphery of the first part and extends along the side of the main body component in the thickness direction, and bends to the surface of the glass plate away from the battery cell layer to form an opening.

[0012] In some embodiments, the flexible cover covers the entire surface of the battery cell layer on the second side along the thickness direction and is sealed to the glass plate.

[0013] In some embodiments, the main component further includes:

[0014] The first encapsulating adhesive layer is configured to bond the glass plate and the battery cell layer; and

[0015] The second encapsulating adhesive layer is configured to cover the surface of the second side of the battery cell layer;

[0016] The flexible cover and the second encapsulating adhesive layer are in separable contact.

[0017] In some embodiments, the photovoltaic module further includes a junction box disposed on a flexible cover, and the junction box is provided with a first contact.

[0018] The battery cell layer includes a busbar and multiple battery strings, which are connected by the busbar. The busbar is provided with a second contact.

[0019] The first contact is connected to the second contact.

[0020] In some embodiments, a limiting member is provided between the flexible cover and the main body component, configured to limit the relative position of the flexible cover and the main body component in a plane perpendicular to the thickness direction.

[0021] In some embodiments, a plurality of junction boxes are spaced apart on the flexible cover along the extension direction of the busbar, and each junction box is provided with a pair of first contacts;

[0022] Multiple pairs of second contacts are provided, and they are all located on the busbar on the side where the power line is located in the extension direction of the battery string. Each pair of second contacts is located at the end of the adjacent busbar that is close to each other.

[0023] In this configuration, multiple pairs of first contacts are connected one-to-one with multiple pairs of second contacts.

[0024] In some embodiments, the flexible cover is made of a transparent material.

[0025] In some embodiments, the flexible cover adopts a one-piece molded structure.

[0026] Embodiments of this disclosure provide a method for manufacturing a photovoltaic module, comprising:

[0027] Fabricate the main component, in which a glass plate is located on the first side of the solar cell layer along the thickness direction of the photovoltaic module; and

[0028] The main component is placed inside the flexible cover through an opening in the flexible cover, such that the wall of the flexible cover opposite the opening at least partially covers the second side of the battery cell layer along the thickness direction.

[0029] In some embodiments, prior to the step of inserting the main component into the flexible cover through an opening in the flexible cover, the photovoltaic module manufacturing method further includes:

[0030] The junction box is fixed to the flexible cover.

[0031] In some embodiments, the flexible cover entirely covers the second side of the cell layer along the thickness direction. After placing the main component into the flexible cover through the opening, the photovoltaic module manufacturing method further includes:

[0032] A vacuum is drawn between the flexible cover and the main body component to connect the first contact and the second contact. The first contact is located on the junction box of the flexible cover, and the second contact is located on the busbar that connects multiple battery strings in the battery cell layer.

[0033] The flexible cover is sealed to the glass plate.

[0034] In some embodiments, the steps for preparing the main component specifically include:

[0035] The glass plate and the battery cell layer are bonded together by the first encapsulating adhesive layer;

[0036] A second encapsulating adhesive layer is coated on the surface of the second side of the battery cell layer;

[0037] An isolation layer is attached to the side of the second encapsulating adhesive layer away from the battery cell layer;

[0038] The glass plate, the first encapsulating layer, the battery cell layer, the second encapsulating layer, and the separator are laminated together.

[0039] After lamination, the insulating layer is removed, and the second contact is welded to the busbar connecting multiple battery strings in the battery cell layer to form the main component.

[0040] The photovoltaic module of this disclosure incorporates the main components as a single structure within a flexible cover. This flexible cover protects the main components, addressing the fragility of photovoltaic modules during transportation and installation, and reducing the risk of damage from impacts. Furthermore, compared to traditional double-glass modules, replacing the backsheet glass with a flexible cover reduces the overall weight of the photovoltaic module and lowers costs. Attached Figure Description

[0041] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this application, illustrate exemplary embodiments of this disclosure and are used to explain this disclosure, but do not constitute an undue limitation of this disclosure. In the drawings:

[0042] Figure 1 These are schematic cross-sectional views of some embodiments of the photovoltaic modules disclosed herein;

[0043] Figure 2 This is a front structural schematic diagram of some embodiments of the photovoltaic module disclosed herein;

[0044] Figure 3 for Figure 2 A magnified view of the area where the second contact point is located;

[0045] Figure 4 These are schematic diagrams illustrating the internal structure of some embodiments of the flexible cover in the photovoltaic module disclosed herein;

[0046] Figure 5This is a schematic diagram of the back structure of some embodiments of the flexible cover in the photovoltaic module disclosed herein.

[0047] Explanation of reference numerals in the attached figures

[0048] 1. Glass plate; 2. First encapsulating layer; 3. Battery cell layer; 31. Battery string; 311. Battery cell; 32. Busbar; 321. Second contact; 4. Second encapsulating layer; 5. Flexible cover; 51. First part; 52. Second part; 6. Junction box; 61. First contact; 7. Power cord; 8. Terminal block; 10. Main body component; A. Opening. Detailed Implementation

[0049] The present disclosure is described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. The aspects so defined may be combined with any other aspect or aspects unless expressly stated otherwise. In particular, any feature considered preferred or advantageous may be combined with one or more other features considered preferred or advantageous.

[0050] The terms "first" and "second" used in this disclosure are merely for ease of description and to distinguish different components with the same name, and do not indicate a sequential or primary / secondary relationship.

[0051] Furthermore, when an element is referred to as being "on" another element, the element may be directly on the other element, or it may be indirectly on the other element with one or more intermediate elements inserted between them. Additionally, when an element is referred to as being "connected" to another element, the element may be directly connected to the other element, or it may be indirectly connected to the other element with one or more intermediate elements inserted between them. In the following drawings, the same reference numerals denote the same elements.

[0052] The descriptions of orientation or positional relationships using terms such as "upper," "lower," "top," "bottom," "front," "back," "inner," and "outer" in this disclosure are for the convenience of describing this disclosure only, and are not intended to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this disclosure.

[0053] This disclosure provides a photovoltaic module, such as Figures 1 to 5 As shown, in some embodiments, the system includes a main component 10 and a flexible cover 5. The main component 10 includes a glass plate 1 and a solar cell layer 3, with the glass plate 1 disposed only on a first side of the solar cell layer 3 along the thickness direction of the photovoltaic module; the flexible cover 5 has an opening A for the main component 10 to be inserted. The main component 10 is located within the flexible cover 5, and the wall surface of the flexible cover 5 opposite to the opening A at least partially covers a second side of the solar cell layer 3 along the thickness direction.

[0054] The flexible cover 5 is elastic and can be made of transparent materials, such as silicone, thermoplastic elastomers (TPE / TPR), etc. Because the transparent flexible cover 5 allows light to pass through, this type of photovoltaic module is still equivalent to a double-glass module; alternatively, the flexible cover 5 can be made of non-transparent materials, in which case the photovoltaic module is equivalent to a single-glass module. The flexible cover 5 can be made of any high-performance, lightweight, and high-strength flexible polymer material.

[0055] The flexible cover 5 can be manufactured in one piece, which is easy to process and helps to ensure structural strength.

[0056] The flexible cover 5 can completely cover the second side of the cell layer 3 along its thickness direction. When the flexible cover 5 is made of transparent material to form a double-glass module, the overall coverage structure can increase the light transmission area, increase the power of the photovoltaic module, and improve the sealing performance, preventing external dust and moisture from entering, thereby improving the reliability of the photovoltaic module and extending its service life. Optionally, the side of the cell layer 3 away from the glass plate 1 is generally coated with a second encapsulating adhesive layer 4 for protection. Therefore, the flexible cover 5 can also partially cover the second side of the cell layer 3 along its thickness direction.

[0057] The photovoltaic module of this embodiment has at least one of the following advantages:

[0058] 1. Because the flexible cover 5 is elastic, the main component 10 is installed in the flexible cover 5 as an integral structure. The flexible cover 5 protects the main component 10 and can solve the problem of photovoltaic modules being fragile during transportation and installation. It can also prevent breakage due to drops or collisions during handling. Moreover, since the back sheet glass is omitted, the main component 10 is not easy to break during the lamination process.

[0059] 2. Compared with traditional double-glass modules, replacing the heavy backsheet glass with a flexible cover 5 can reduce the overall weight of the photovoltaic module, making it easier to handle and install, and reducing costs.

[0060] 3. Traditional double-glass and single-glass modules have sharp corners, which often cause injury to installers and power plant maintenance personnel. The photovoltaic module disclosed herein can effectively cushion the main component 10 by wrapping it with a flexible cover 5, thereby improving its safety.

[0061] like Figure 1 As shown, the flexible cover 5 is connected to the glass plate 1 at opening A, for example, by applying sealant to opening A or by setting a buckle. This structure not only improves the firmness of the connection between the flexible cover 5 and the main body component 10, preventing the flexible cover 5 from loosening during long-term use, but also allows for easy removal and replacement or maintenance of the flexible cover 5 after wear or aging, as it is only connected to the glass plate 1 at opening A. Optionally, the flexible cover 5 and the main body component 10 can also be prevented from loosening by a tight fit alone.

[0062] like Figure 1 As shown, the portion of the flexible cover 5 near the opening A extends to the surface of the glass plate 1 away from the battery cell layer 3, and the portion near the opening A can be connected to the surface of the glass plate 1 away from the battery cell layer 3.

[0063] This structure can restrict the flexible cover 5 from detaching by the portion of the flexible cover 5 located on the front side of the glass plate 1, thereby more stably mounting the flexible cover 5 on the main component 10. Moreover, the flexible cover 5 can surround the side of the photovoltaic module, directly achieving side sealing of the photovoltaic module through the flexible cover 5, eliminating the need for additional sealing components, simplifying the structure and production process, and optimizing the sealing effect.

[0064] Specifically, the flexible cover 5 includes a first part 51 and a second part 52. The first part 51 at least partially covers the second side of the battery cell layer 3. The second part 52 surrounds the entire outer periphery of the first part 51, extends along the side of the main body member 10 in the thickness direction, and bends to the surface of the glass plate 1 away from the battery cell layer 3 to form an opening A. To optimize the sealing effect, sealant can be applied to the free end of the second part 52 to connect it to the glass plate 1.

[0065] This type of photovoltaic module can restrict the flexible cover 5 from detaching by bending the second part 52 to the surface of the glass plate 1 away from the cell layer 3, thereby more stably mounting the flexible cover 5 on the main component 10. Moreover, the second part 52 can surround the entire outer periphery of the photovoltaic module, achieving a sealing effect and eliminating the need for a separate sealing component or applying sealant to the side of the photovoltaic module.

[0066] In some embodiments, the flexible cover 5 covers the entire surface of the second side of the cell layer 3 along the thickness direction and is sealed to the glass plate 1. This structure allows the entire cell layer 3 to be located inside the flexible cover 5, and the sealed connection between the flexible cover 5 and the glass plate 1 ensures the airtightness of the entire photovoltaic module and improves the service life of the photovoltaic module.

[0067] like Figure 1 As shown, the main component 10 may further include: a first encapsulating adhesive layer 2, configured to bond the glass plate 1 to the battery cell layer 3; and a second encapsulating adhesive layer 4, configured to cover the surface of the second side of the battery cell layer 3. The flexible cover 5 and the second encapsulating adhesive layer 4 are in separable contact; specifically, the first part 51 is in separable contact with the second encapsulating adhesive layer 4, meaning the first part 51 only maintains contact with the second encapsulating adhesive layer 4, but is not bonded to it. The portion of the flexible cover 5 near the opening A can be bonded to the glass plate 1 with sealant or by a tight fit.

[0068] This structure integrates a glass plate 1, a first encapsulating layer 2, a battery cell layer 3, and a second encapsulating layer 4 into a single main component 10 through lamination. The main component 10 is then placed inside a flexible cover 5. To prevent damage or contamination of the second encapsulating layer 4 during lamination, an insulating layer, such as Teflon, can be attached to the side of the second encapsulating layer 4 away from the battery cell layer 3. After lamination and cooling, the insulating layer can be removed to form the main component 10, which is then placed inside the flexible cover 5.

[0069] In this embodiment, the flexible cover 5 is in direct contact with the second encapsulating adhesive layer 4, eliminating the need for a backsheet glass, which reduces the weight of the photovoltaic module and lowers costs. Moreover, since the flexible cover 5 and the second encapsulating adhesive layer 4 are separable, it is easy to remove and replace or repair the flexible cover 5 when it becomes worn or aged.

[0070] Based on the above embodiments, such as Figure 5 As shown, the photovoltaic module also includes a junction box 6, which is mounted on the flexible cover 5 and has a first contact 61. Figure 2 As shown, the solar cell layer 3 includes a busbar 32 and multiple cell strings 31. The multiple cell strings 31 are arranged side-by-side along the width direction of the photovoltaic module and are connected by the busbar 32, which extends along the width direction of the photovoltaic module, for example, forming a series connection. Each cell string 31 extends along the length direction of the photovoltaic module and includes multiple side-by-side solar cells 311. All the solar cells 311 form a rectangular array. The busbar 32 is provided with a second contact 321. A first contact 61 abuts against the second contact 321. For example, the materials of the first contact 61 and the second contact 321 are copper or other conductive materials.

[0071] In this embodiment, the junction box 6 is mounted on the flexible cover 5, forming an assembly with the junction box 6 beforehand. During photovoltaic module assembly, the flexible cover 5 is simply fitted onto the main component 10 and reliably attached. Electrical connection between the junction box 6 and the cell layer 3 is achieved through the mating of the first contact 61 and the second contact 321. Unlike traditional photovoltaic modules where the junction box is welded to the backsheet, this simplifies the assembly process and improves production efficiency. Furthermore, when the junction box 6 is damaged due to hot spot effects or excessive power load during photovoltaic module power generation, traditional photovoltaic modules require sealing glue between the junction box and the backsheet to ensure airtightness, making disassembly difficult. In contrast, the photovoltaic module of this disclosure allows for the removal of the junction box 6 simply by removing the flexible cover 5, facilitating replacement without scrapping the entire photovoltaic module.

[0072] If the junction box 6 is directly embedded during the production of the flexible cover 5, the entire assembly formed by the flexible cover 5 and the junction box 6 can be replaced as a whole when the junction box 6 is damaged, which can improve the convenience of maintenance. If the junction box 6 is detachably installed on the flexible cover 5 through the installation interface, it can be removed from the flexible cover 5 after the junction box 6 is damaged, and a new junction box 6 can be reinstalled on the flexible cover 5, which can reduce maintenance costs.

[0073] In some embodiments, a limiting member is provided between the flexible cover 5 and the main body component 10, configured to limit the relative position of the flexible cover 5 and the main body component 10 in a plane perpendicular to the thickness direction. For example, the limiting member may be a concave-convex mating structure respectively provided on the flexible cover 5 and the main body component 10.

[0074] By setting a limiting component, the flexible cover 5 and the main body component 10 can be positioned more accurately, so that the first contact 61 and the second contact 321 can be reliably connected. Moreover, during use, it can prevent the flexible cover 5 from deforming and causing misalignment between the first contact 61 and the second contact 321, thereby improving the reliability of the electrical connection between the cell layer 3 and the junction box 6 in the photovoltaic module.

[0075] like Figure 5 As shown, the flexible cover 5 has multiple junction boxes 6 spaced apart along the extension direction of the busbar 32, and each junction box 6 has a pair of first contacts 61. Figure 3 As shown, multiple pairs of second contacts 321 are provided, and they are all located on the busbar 32 on the side where the power line 7 is located in the extension direction of the battery string 31. Each pair of second contacts 321 is located at the close ends of adjacent busbars 32. Among them, multiple pairs of first contacts 61 are connected to multiple pairs of second contacts 321 in a one-to-one correspondence.

[0076] For example, such as Figure 2 As shown, six battery strings 31 are arranged side-by-side along the width of the photovoltaic module in the cell layer 3. Each battery string 31 has multiple battery cells 311 arranged side-by-side along the length of the photovoltaic module. Three pairs of first contacts 61 and second contacts 321 are provided. The six battery strings 31 are connected in series via busbars 32. Positive and negative power lines 7 are connected to the busbars 32 at the beginning and end of the series-connected battery strings 31, respectively. A pair of second contacts 321 is provided at the close ends of adjacent busbars 32 on the side where the power lines 7 are located. Each pair of second contacts 321 corresponds to a junction box 6. A diode is provided in the junction box 6 to bypass the blocked battery strings 31 when some battery strings 31 are obstructed, allowing the remaining battery strings 31 to continue operating normally. The positive and negative power lines 7 are connected to the junction boxes 6 on both sides, and the free ends of the power lines 7 are provided with terminals 8.

[0077] Secondly, this disclosure also provides a method for manufacturing a photovoltaic module, which in some embodiments includes:

[0078] Step 101: Prepare the main component 10. In the main component 10, the glass plate 1 is located on the first side of the cell layer 3 along the thickness direction of the photovoltaic module; and

[0079] Step 102: Insert the main body component 10 into the flexible cover 5 through the opening A on the flexible cover 5, so that the wall surface of the flexible cover 5 opposite to the opening A at least partially covers the second side of the battery cell layer 3 along the thickness direction.

[0080] In this embodiment, the photovoltaic module incorporates the main component 10 as a single structure within a flexible cover 5. The flexible cover 5 protects the main component 10, addressing the fragility of the photovoltaic module during transportation and installation. Furthermore, by eliminating the backsheet glass, the main component 10 is less prone to breakage during the lamination process. Moreover, compared to traditional double-glass modules, replacing the backsheet glass with a flexible cover 5 reduces the overall weight of the photovoltaic module and lowers costs.

[0081] In some embodiments, after the main component 10 is placed into the flexible cover 5 through the opening A on the flexible cover 5 in step 102, the method for manufacturing the photovoltaic module further includes:

[0082] Step 103: Connect the flexible cover 5 to the glass plate 1 at the opening A; for example, by applying sealant to the opening A or by setting a buckle to connect it to the glass plate 1.

[0083] This type of photovoltaic module can improve the firmness of the connection between the flexible cover 5 and the main component 10, preventing the flexible cover 5 from loosening during long-term use; moreover, after the flexible cover 5 is worn or aged, it is easy to remove and replace or maintain the flexible cover 5 only when it is connected to the glass plate 1 at the opening A.

[0084] In some embodiments, prior to step 102, in which the main component 10 is inserted into the flexible cover 5 through the opening A on the flexible cover 5, the method for manufacturing the photovoltaic module further includes:

[0085] Step 100: Attach the junction box 6 to the flexible cover 5. For example, the junction box 6 can be directly embedded during the production of the flexible cover 5, or the junction box 6 can be detachably mounted on the flexible cover 5 via a mounting interface.

[0086] The order of steps 100 and 101 is not restricted.

[0087] In this embodiment, the junction box 6 and the flexible cover 5 are pre-assembled into a single unit. During photovoltaic module assembly, the flexible cover 5 is simply fitted onto the main component 10 and reliably attached. Electrical connection between the junction box 6 and the cell layer 3 is achieved through the mating of the first contact 61 and the second contact 321. This simplifies the assembly process. Furthermore, if the junction box 6 is damaged due to hot spot effects or excessive power load during photovoltaic module power generation, the flexible cover 5 can be removed to easily disassemble and replace the junction box 6.

[0088] In some embodiments, the flexible cover 5 completely covers the second side of the cell layer 3 along the thickness direction. After the main component 10 is placed into the flexible cover 5 through the opening A in step 102, the photovoltaic module manufacturing method further includes:

[0089] Step 201: Vacuum the flexible cover 5 and the main body component 10 to connect the first contact 61 and the second contact 321. The first contact 61 is located on the junction box 6 of the flexible cover 5, and the second contact 321 is located on the busbar 32 that connects multiple battery strings 31 in the battery cell layer 3.

[0090] Step 202: Seal and connect the flexible cover 5 to the glass plate 1.

[0091] Step 201 is performed before step 202, and step 202 is a specific form of step 103. In step 201, a vacuum is created between the flexible cover 5 and the main component 10 using a vacuum device on the laminating equipment, so that the flexible cover 5 and the main component 10 are fitted together, thereby reliably connecting the first contact 61 and the second contact 321. In step 202, the flexible cover 5 can be sealed to the glass plate 1 at the opening A using sealant.

[0092] In some embodiments, step 101, which involves preparing the main component 10, specifically includes:

[0093] Step 301: Bond the glass plate 1 to the battery cell layer 3 using the first encapsulating adhesive layer 2;

[0094] Step 302: Coat the second encapsulating adhesive layer 4 on the surface of the second side of the battery cell layer 3;

[0095] Step 303: Apply an isolation layer, such as Teflon, to the side of the second encapsulating adhesive layer 4 away from the battery cell layer 3;

[0096] Step 304: Laminate the glass plate 1, the first encapsulating layer 2, the battery cell layer 3, the second encapsulating layer 4, and the separator layer;

[0097] Step 305: After lamination, remove the insulating layer and weld the second contact 321 to the busbar 32 that connects multiple battery strings 31 in the battery cell layer 3 to form the main component 10.

[0098] Steps 301 to 305 are executed sequentially. By setting the entire isolation layer for lamination, damage or contamination of the second encapsulating adhesive layer 4 can be prevented during the lamination process. After lamination is completed and the layers have cooled, the isolation layer can be removed.

[0099] The present disclosure provides a detailed description of a photovoltaic module and its manufacturing method. Specific embodiments have been used to illustrate the principles and implementation methods of the present disclosure. These embodiments are merely illustrative and are intended to aid in understanding the method and core concepts of the present disclosure. It should be noted that those skilled in the art can make various improvements and modifications to the present disclosure without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of this disclosure.

Claims

1. A photovoltaic module, comprising: The main component (10) includes a glass plate (1), a battery cell layer (3), a first encapsulating adhesive layer (2), and a second encapsulating adhesive layer (4). The glass plate (1) is disposed on the first side of the battery cell layer (3) along the thickness direction of the photovoltaic module. The first encapsulating adhesive layer (2) is configured to bond the glass plate (1) to the battery cell layer (3). The second encapsulating adhesive layer (4) is configured to cover the surface of the second side of the battery cell layer (3). The battery cell layer (3) includes a busbar (32) and a plurality of battery strings (31). The plurality of battery strings (31) are connected through the busbar (32). The busbar (32) is provided with a second contact (321). The flexible cover (5) has an opening (A) for the main body component (10) to be inserted; and Junction box (6), the junction box (6) is disposed on the flexible cover (5), and the junction box (6) is provided with a first contact (61). The main body component (10) is located inside the flexible cover (5). The wall surface of the flexible cover (5) opposite to the opening (A) covers the second side of the battery cell layer (3) along the thickness direction. A vacuum is drawn between the flexible cover (5) and the main body component (10) to make the flexible cover (5) fit with the main body component (10), so that the first contact (61) and the second contact (321) are connected. The portion of the flexible cover (5) near the opening (A) extends to the surface of the glass plate (1) away from the battery cell layer (3). The opening (A) of the flexible cover (5) is sealed to the glass plate (1). The flexible cover (5) is in detachable contact with the second encapsulation adhesive layer (4).

2. The photovoltaic module according to claim 1, wherein the flexible cover (5) comprises: The first part (51) at least partially covers the second side of the battery cell layer (3); and The second part (52) is connected to the entire outer periphery of the first part (51) and extends along the side of the main body (10) in the thickness direction and bends to the surface of the glass plate (1) away from the battery cell layer (3) to form the opening (A).

3. The photovoltaic module according to claim 1, wherein the flexible cover (5) covers the entire surface of the cell layer (3) along the second side of the thickness direction and is sealed to the glass plate (1).

4. The photovoltaic module according to claim 1, wherein a limiting member is provided between the flexible cover (5) and the main body component (10), configured to limit the relative position of the flexible cover (5) and the main body component (10) in a plane perpendicular to the thickness direction.

5. The photovoltaic module according to claim 1, wherein, The flexible cover (5) is provided with a plurality of junction boxes (6) spaced apart along the extension direction of the busbar (32), and each junction box (6) is provided with a pair of first contacts (61). Multiple pairs of the second contacts (321) are provided, and they are all provided on the busbar (32) on the side where the power line is located in the extension direction of the battery string (31). Each pair of the second contacts (321) is provided at the ends of adjacent busbars (32) that are close to each other. Among them, multiple pairs of the first contacts (61) are connected one-to-one with multiple pairs of the second contacts (321).

6. The photovoltaic module according to claim 1, wherein the flexible cover (5) is made of a transparent material.

7. The photovoltaic module according to claim 1, wherein the flexible cover (5) adopts an integral molding structure.

8. A method for manufacturing a photovoltaic module, comprising: Prepare a main body component (10), in which a glass plate (1) is located on the first side of the cell layer (3) along the thickness direction of the photovoltaic module; Connect the junction box (6) to the flexible cover (5); and The main component (10) is placed into the flexible cover (5) through the opening (A) on the flexible cover (5) so that the wall surface of the flexible cover (5) opposite to the opening (A) covers the second side of the battery cell layer (3) along the thickness direction. The portion of the flexible cover (5) near the opening (A) extends to the surface of the glass plate (1) away from the battery cell layer (3). Vacuum is drawn between the flexible cover (5) and the main body component (10) to connect the first contact (61) and the second contact (321). The first contact (61) is located on the junction box (6) of the flexible cover (5), and the second contact (321) is located on the busbar (32) that connects multiple battery strings (31) in the battery cell layer (3). The flexible cover (5) is sealed to the glass plate (1).

9. The photovoltaic module manufacturing method according to claim 8, wherein the step of preparing the main component (10) specifically includes: The glass plate (1) and the battery cell layer (3) are bonded together by the first encapsulating adhesive layer (2). A second encapsulating adhesive layer (4) is coated on the surface of the second side of the battery cell layer (3); An isolation layer is attached to the side of the second encapsulating adhesive layer (4) away from the battery cell layer (3); The glass plate (1), the first encapsulating adhesive layer (2), the battery cell layer (3), the second encapsulating adhesive layer (4) and the insulating layer are laminated together; After lamination, the isolation layer is removed, and the second contact (321) is welded to the busbar (32) that connects multiple battery strings (31) in the battery cell layer (3) to form the main body component (10).

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