Solar cell and photovoltaic module with same

Abstract

The invention provides a solar cell piece and a photovoltaic module with the solar cell piece, and belongs to the technical field of solar cells, and the solar cell piece comprises a body which is provided with a front surface and a back surface which are oppositely arranged; the plurality of insulating rubber platforms are arranged on the front surface of the body, the insulating rubber platforms are at least arranged at the corners and the middle part of the front surface, the insulating rubber platforms are made of an acrylic acid material, and the maximum height of the insulating rubber platforms is between 10 microns and 20 microns. According to the invention, the plurality of insulating rubber platforms are arranged at the corners and the middle part of the front surface of the body, and the maximum height of the insulating rubber platforms is between 10 microns and 20 microns, so that another adjacent solar cell can be well supported, the front surface of the body can be effectively protected, and the service life of the body is prolonged. The problem in the prior art that adjacent solar cells are easy to scribe can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of solar cells, and in particular to a solar cell sheet and a photovoltaic module having the same. Background Art

[0002] In current photovoltaic modules, after the cell preparation is completed but before the coating and lamination processes are carried out, multiple cells are stacked up and down for the convenience of storage and transportation. During the storage and transportation process, adjacent cells are easily subject to external forces and slip, resulting in scratches between adjacent cells, causing damage to the cells. Summary of the invention

[0003] The present invention provides a solar cell to solve the problem of slicing between adjacent solar cells in the prior art.

[0004] According to one aspect of the present invention, a solar cell is provided, comprising: a body having a front side and a back side arranged opposite to each other; a plurality of insulating adhesive pads arranged on the front side of the body, wherein the insulating adhesive pads are arranged at least at the corners and the middle of the front side, the insulating adhesive pads are made of acrylic material, and the maximum height of the insulating adhesive pads is between 10 μm and 20 μm.

[0005] Furthermore, the cross-sectional area of ​​the insulating rubber base gradually decreases from the bottom to the top.

[0006] Furthermore, the cross-sectional shape of the insulating rubber base is circular or polygonal.

[0007] Furthermore, the insulating rubber platform includes an inner support platform and an outer support platform, the outer support platform is annularly arranged on the outer side of the inner support platform, and the cross-sectional areas of the inner support platform and the outer support platform are gradually reduced from the bottom to the top.

[0008] Furthermore, the height of the inner support platform is higher than the height of the outer support platform.

[0009] Further, the height of the outer edge of the inner support platform relative to the front side is 0, and / or the height of the inner edge of the outer support platform relative to the front side is 0.

[0010] Furthermore, the insulating rubber platform also includes a transition section, which is located between the inner support platform and the outer support platform. The transition section is respectively connected to the outer edge of the inner support platform and the inner edge of the outer support platform. The maximum height of the transition section is lower than the height of the inner support platform and lower than the height of the outer support platform.

[0011] Furthermore, the top of the transition section is a plane; or, the transition section has an outer edge, a middle portion and an inner edge that are relatively arranged, and the height of the middle portion of the transition section is lower than the height of the outer edge of the transition section and the height of the inner edge of the transition section.

[0012] Furthermore, a plurality of insulating adhesive pads are arrayed on the front side, and a total area of ​​the bottoms of the plurality of insulating adhesive pads accounts for 1% to 6% of the area of ​​the front side.

[0013] According to another aspect of the present invention, a photovoltaic module is provided. The photovoltaic module comprises the solar cell mentioned above.

[0014] By applying the technical solution of the present invention, by setting multiple insulating adhesive pads at the corners and the middle of the front of the main body, and the maximum height of the insulating adhesive pads is between 10μm and 20μm, a good supporting effect can be formed for another adjacent solar cell, so that the front of the main body can be effectively protected, and the adjacent solar cells can be prevented from slipping due to external forces, resulting in the phenomenon of slicing between adjacent solar cells. The insulating adhesive pad made of acrylic material has higher strength and durability, and can maintain stable performance for a long time. The acrylic insulating adhesive pad has good fluidity and can penetrate into the surface that needs to be bonded to enhance the bonding effect. Such a setting not only ensures the long-term stability of the solar cell, but also reduces the subsequent maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 A schematic structural diagram of a solar cell provided according to the present invention is shown;

[0017] Figure 2 A schematic structural diagram of an insulating adhesive station according to a first embodiment of the present invention is shown;

[0018] Figure 3 A cross-sectional view of an insulating adhesive base according to a second embodiment of the present invention is shown;

[0019] Figure 4 A cross-sectional view of an insulating adhesive base according to a third embodiment of the present invention is shown;

[0020] Figure 5 A schematic structural diagram of an insulating adhesive station according to a fourth embodiment of the present invention is shown;

[0021] Figure 6 A schematic structural diagram of a solar cell according to a fifth embodiment of the present invention is shown;

[0022] Figure 7 A schematic structural diagram of a solar cell according to a sixth embodiment of the present invention is shown;

[0023] Figure 8 A schematic structural diagram of a screen provided according to an embodiment of the present invention is shown.

[0024] The above drawings include the following reference numerals:

[0025] 10. Front;

[0026] 20. Insulation rubber table;

[0027] 21. Internal support platform;

[0028] 22. External support platform;

[0029] 23. Transition section;

[0030] 30. Screen printing plate;

[0031] 31. Marginal area;

[0032] 32. Central area. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figure 1 As shown, an embodiment of the present invention provides a solar cell, which includes a body and a plurality of insulating adhesive pads 20. The body has a front side 10 and a back side that are arranged opposite to each other; the plurality of insulating adhesive pads 20 are arranged on the front side 10 of the body, and the insulating adhesive pads 20 are arranged at least at the corners of the front side 10 and the middle of the front side 10. The insulating adhesive pads 20 are made of acrylic material, and the maximum height of the insulating adhesive pads 20 is between 10 μm and 20 μm.

[0035] By applying the technical solution of the present invention, by setting a plurality of insulating adhesive pads 20 at the corners and the middle of the front face 10 of the main body, and the maximum height of the insulating adhesive pads 20 is between 10μm and 20μm, a good supporting effect can be formed for another adjacent solar cell, so that the front face 10 of the main body can be effectively protected, and the adjacent solar cells can be prevented from slipping due to external forces, and the phenomenon of slicing between adjacent solar cells can be avoided. The insulating adhesive pads 20 made of acrylic material have higher strength and durability, and can maintain stable performance for a long time. The insulating adhesive pads 20 made of acrylic material have good fluidity and can penetrate into the surface to be bonded to enhance the bonding effect. Such a setting not only ensures the long-term stability of the solar cell, but also reduces the subsequent maintenance costs.

[0036] In the embodiments of the present application, the types of the body include but are not limited to BC cells. BC cells, i.e. BC (back contact) type cells, are called full back electrode contact crystalline silicon photovoltaic cells. The positive and negative metals of BC cells are both on the back of the cells, so that there is no cell grid line on the front of the cells, eliminating the blocking and reflection of light by the traditional cell whole point electrode, and can achieve 100% reception of sunlight, effectively reducing optical loss while improving the overall aesthetics.

[0037] In an embodiment of the present application, the maximum height of the insulating glue stage 20 is between 10μm and 20μm, specifically, it can be 10μm, 15μm or 20μm. Through the above settings, by controlling the maximum height of the bottom of the insulating glue stage 20, it is possible to minimize the impact on the light absorption of the solar cell while ensuring sufficient support effect and mechanical strength, thereby improving the overall conversion efficiency of the solar cell. If the maximum height of the insulating glue stage 20 is less than 10μm, the insulating glue stage 20 has a poor support effect on the front 10 and is prone to collapse, reducing the stability and reliability of the solar cell. If the maximum height of the insulating glue stage 20 is greater than 20μm, the use cost of the insulating glue stage 20 is too high, greatly reducing the economic benefits. Therefore, in an embodiment of the present application, the maximum height of the insulating glue stage 20 is between 10μm and 20μm, which can not only ensure the support effect of the insulating glue stage 20 on the front 10, but also improve the economic benefits.

[0038] Furthermore, the insulating rubber base 20 made of acrylic material has high transparency. Setting it on the front side 10 of the main body can ensure that the front side 10 of the main body is not blocked, maximize the use of sunlight, and improve the light absorption efficiency of the solar cell.

[0039] Specifically, the cross-sectional area of ​​the insulating rubber base 20 gradually decreases from the bottom to the top. Through the above configuration, this conical design can not only provide sufficient support and insulation effect, but also reduce the shading of the front side 10 of the solar cell body, thereby reducing the negative impact on light absorption and further improving the conversion efficiency of the solar cell.

[0040] Furthermore, if Figure 2 , Figure 5 as well as Figure 6 As shown, the cross-sectional shape of the insulating adhesive pad 20 is circular or polygonal. Through the above-mentioned setting, the circular or regular polygonal cross-sectional area can evenly distribute stress, and is less likely to collapse than insulating adhesive pads of other shapes, which can reduce the mechanical damage of the body during packaging, transportation and installation, and improve the reliability and service life of the solar cell. In addition, the circular or regular polygonal cross-sectional area can also provide a stable support force, further ensuring the stability of the solar cell during transportation, and can avoid adjacent solar cells from slipping due to external forces, resulting in the phenomenon of scratching between adjacent solar cells, which can ensure the integrity and long-term stability of the solar cell, and reduce the maintenance and replacement costs caused by damage to the solar cell.

[0041] like Figure 2 As shown, according to the first embodiment of the present application, an insulating glue station 20 is provided, the cross-section shape of which is circular and adopts a plurality of linear arrays, which has the advantages of easy operation and low defective rate. Figure 5 , Figure 6 as well as Figure 7 As shown, according to the fourth and fifth embodiments of the present application, an insulating rubber base 20 is provided, which is different from the first embodiment in that the cross-sectional shape is a polygon. Specifically, as Figure 5 As shown, the cross-sectional shape of the insulating adhesive base 20 of the fourth embodiment provided is a quadrilateral, which has better structural stability. Figure 6 and Figure 7 As shown, the cross-sectional shape of the insulating rubber base 20 of the fifth embodiment provided is a triangle, which has the advantages of strong anti-deformation ability and more efficient space utilization.

[0042] like Figure 3As shown, according to the second embodiment of the present application, an insulating glue table 20 is provided, which is different from the first embodiment in that the insulating glue table 20 includes an inner support table 21 and an outer support table 22. The outer support table 22 is arranged in an annular manner on the outside of the inner support table 21, and the cross-sectional areas of the inner support table 21 and the outer support table 22 gradually decrease from the bottom to the top. Through the above-mentioned arrangement, the combination design of the inner support table 21 and the outer support table 22, and the cross-sectional areas of the inner support table 21 and the outer support table 22 gradually decrease from the bottom to the top, not only enhances the mechanical strength of the solar cell, but also provides better structural support and positioning battery for the body, can significantly improve the environmental adaptability and stability of the solar cell, and also provides a more effective insulation effect, and the shielding effect on light is gradually reduced, ensuring the light absorption efficiency and conversion efficiency of the solar cell. In addition, the combination design of the inner support table 21 and the outer support table 22 has good aging resistance, so as to maintain the long-term electrical insulation performance and structural stability of the solar cell, and improve the reliability of the solar cell.

[0043] Specifically, the height of the inner support platform 21 is higher than the height of the outer support platform 22. Through the above arrangement, this height difference design can better protect the central area of ​​the solar cell, reduce stress concentration in the central area, improve the overall compressive resistance of the cell, and effectively reduce the damage rate of components caused by environmental factors. The central part of the cell can maintain good stability and light absorption capacity, reduce the performance degradation of the solar cell caused by external pressure, and significantly improve the environmental adaptability and power generation stability of the solar cell.

[0044] Among them, the height of the outer edge of the inner support platform 21 relative to the front face 10 can be 0 and the height of the inner edge of the outer support platform 22 relative to the front face 10 can be 0, or the height of the outer edge of the inner support platform 21 relative to the front face 10 can be 0, or the height of the inner edge of the outer support platform 22 relative to the front face 10 can be 0. In this embodiment, the height of the outer edge of the inner support platform 21 relative to the front face 10 and the height of the inner edge of the outer support platform 22 relative to the front face 10 are both 0. Through the above settings, this design allows a smooth transition between the insulating rubber platform 20 and the front face 10 of the solar cell body, reduces the reflection and scattering of sunlight, allows more sunlight to directly irradiate the solar cell, increases the incidence rate of sunlight, and then improves the light absorption efficiency and conversion efficiency of the solar cell, maximizes the use of sunlight resources, and increases power generation. Such a setting can significantly improve the conversion efficiency of light energy and reduce energy loss caused by environmental factors.

[0045] Furthermore, if Figure 4As shown, according to the third embodiment of the present application, an insulating rubber platform 20 is provided, which is different from the first embodiment in that the insulating rubber platform 20 also includes a transition section 23. The transition section 23 is located between the inner support platform 21 and the outer support platform 22, and the transition section 23 is connected to the outer edge of the inner support platform 21 and the inner edge of the outer support platform 22 respectively. The maximum height of the transition section 23 is lower than the height of the inner support platform 21 and lower than the height of the outer support platform 22. Through the above-mentioned setting, the design of the transition section 23 can smoothly connect the inner support platform 21 and the outer support platform 22, reduce stress concentration, improve the crack resistance of the solar cell, and effectively reduce the risk of damage to the solar cell caused by natural disasters. In addition, the design of the transition section 23 can effectively alleviate the impact of earthquakes or strong winds on the solar cell, can significantly improve the earthquake resistance and wind resistance of the solar cell, reduce the damage and maintenance costs of the solar cell caused by natural disasters, and ensure the long-term stable operation of the solar cell.

[0046] Specifically, the top of the transition section 23 is a plane, or the transition section 23 has an outer edge, a middle portion and an inner edge that are relatively arranged, and the height of the middle portion of the transition section 23 is lower than the height of the outer edge of the transition section 23 and the height of the inner edge of the transition section 23. Through the above arrangement, the plane or concave transition section 23 design can further reduce the reflection and scattering of sunlight, increase the direct rate of sunlight, provide a more optimized sunlight absorption effect, reduce the performance fluctuation of the solar cell caused by the change of the sunlight angle, and thus improve the light absorption efficiency of the solar cell.

[0047] like Figure 1 , Figure 6 as well as Figure 7 As shown, multiple insulating adhesive pads 20 are distributed in an array on the front side 10, and the total area of ​​the bottom of the multiple insulating adhesive pads 20 accounts for 1% to 6% of the front area. Through the above configuration, the arrangement of the multiple insulating adhesive pads 20 on the front side 10 is arranged in an array distribution, which can more evenly disperse the load, thereby improving the stability of the overall structure. This distribution method helps to reduce the stress concentration caused by the uneven distribution of support points, thereby improving the reliability and durability of the solar cell structure.

[0048] In the embodiments of the present application, the array distribution includes a uniform rectangular array, a wavy line array, etc., which can make multiple insulating glue platforms 20 evenly distributed on the front side 10, and different arrays can be used according to the cross-sectional shape of the insulating glue platform 20 to achieve the best effect of uniform distribution and support of the front side 10.

[0049] Specifically, Figure 6 and Figure 7As shown, when the cross-sectional shape of the insulating adhesive pad 20 is a triangle, a staggered array or a wavy array can be used to evenly distribute multiple insulating adhesive pads 20 on the front side 10, so that the multiple insulating adhesive pads 20 can support the front side 10 more evenly, avoid stress concentration, and improve the support effect.

[0050] like Figure 6 As shown, the fifth embodiment of the present application provides an insulating glue stage 20 structure with a triangular cross-section shape. Specifically, the insulating glue stage 20 is distributed in an array on the front 10, and each row includes a first unit and a second unit. The triangular arrangement directions of the first unit and the second unit are different, and the first unit and the second unit are alternately distributed on the front 10. The staggered array has the advantage of more efficient space utilization.

[0051] like Figure 7 As shown, the sixth embodiment of the present application provides an insulating glue stage 20 structure with a triangular cross-sectional shape. Specifically, the insulating glue stage 20 includes a plurality of first rows and a plurality of second rows, each first row includes a plurality of first units, each second row includes a plurality of second units, the triangular arrangement directions of the first units and the second units are different, the plurality of first rows and the plurality of second rows are alternately distributed on the front surface 10, and in adjacent first rows and second rows, the first units and the second units are staggered. Compared with the fifth embodiment, this embodiment adopts a wavy line array, which has the advantages of more uniform distribution and reduced number of insulating glue stages 20.

[0052] Furthermore, the total area of ​​the bottom of the multiple insulating glue stations 20 accounts for 1% to 6% of the area of ​​the front side 10, specifically, it can be 1%, 3% or 6%. By controlling the ratio of the total area of ​​the bottom of the insulating glue station 20 to the area of ​​the front side 10, it is possible to minimize the impact on the light absorption of the solar cell while ensuring sufficient insulation effect and mechanical strength, thereby improving the overall conversion efficiency of the solar cell. If the total area of ​​the bottom of the insulating glue station 20 accounts for less than 1% of the area of ​​the front side 10, the supporting effect of the insulating glue station 20 on the front side 10 is poor, and it is easy to collapse, which reduces the stability and reliability of the solar cell. If the total area of ​​the bottom of the insulating glue station 20 accounts for more than 6% of the area of ​​the front side 10, the cost of using the insulating glue station 20 is too high, which reduces the economic benefits. Therefore, in the embodiment of the present application, the total area of ​​the bottom of the insulating glue station 20 accounts for 1% to 6% of the area of ​​the front side 10, which can not only ensure the supporting effect of the insulating glue station 20 on the front side 10, but also improve the economic benefits.

[0053] Specifically, under the premise that the total area of ​​the bottoms of the plurality of insulating adhesive pads 20 accounts for 1% to 6% of the area of ​​the front side 10, the smaller the size of the insulating adhesive pads 20 and the greater the number, the more support points are applied to the solar cell, and the probability of bubbles being generated in the insulating adhesive pads 20 is smaller, thus avoiding collapse, providing better protection for the solar cell, and having higher economic benefits.

[0054] In the embodiment of the present application, the method for preparing the insulating adhesive stage 20 can design a screen 30 that matches the truncated cone-shaped insulating adhesive stage 20, such as Figure 8 As shown, the screen 30 includes a central area 32 and an edge area 31, the central area 32 is a through hole, and the edge area 31 is provided with a ring-shaped wire mesh to facilitate the formation of the insulating rubber platform 20. In addition, the screen 30 can be adjusted and designed accordingly according to the cross-sectional area of ​​the required insulating rubber platform 20, thereby improving the applicability and flexibility of the screen 30.

[0055] According to another aspect of the present invention, a photovoltaic module is provided, which includes the above-mentioned solar cell. Through the above arrangement, not only the mechanical strength of the photovoltaic module can be improved, but also the light absorption efficiency can be improved, thereby significantly improving the overall conversion efficiency and power generation of the photovoltaic module on the basis of ensuring safety and reliability.

[0056] In the embodiments of the present application, the type of photovoltaic module corresponds to the type of the main body, and the types of photovoltaic modules include but are not limited to TOPCon, BC, HTJ and perovskite / laminated layers. TOPCon cells, i.e. tunnel oxide passivated contact solar cells, are high-efficiency solar cell technology based on the principle of selective carriers. Because an ultra-thin oxide layer and an N-type polycrystalline silicon film are prepared on the back of the cell to form a passivated contact structure as a back passivation layer of the cell, it can effectively reduce back recombination and metal contact recombination, thereby improving cell efficiency; BC cells, i.e. BC (back contact) type cells, are called full back electrode contact crystalline silicon photovoltaic cells. The positive and negative metals of BC cells are both on the back of the cell, so that there is no cell grid line on the front of the cell, eliminating the shielding and reflection of light by the whole-point electrodes of traditional cells, and can achieve 100% reception of sunlight, effectively reducing optical losses while improving overall aesthetics; HTJ cells, i.e. heterojunction cells (Heterjunction Technology), HTJ cells use N-type monocrystalline silicon as the substrate, and deposit silicon-based thin film stacks and transparent conductive films (TCO) with different characteristics on the front and back sides respectively, which can block the recombination of minority carriers and holes, improve the open circuit voltage and short-circuit current of the cell, and the cell conversion efficiency is very high. The front and back structures of HTJ are symmetrical, and the TCO film is light-transmitting, so it is naturally a bifacial cell. The bifaciality of HTJ can reach more than 90%; perovskite / tandem cells stack materials with different band gaps together to achieve wider solar spectrum absorption and higher photoelectric conversion efficiency. ALD-SnO2 is deposited on the interface to block ion migration, which effectively improves the photothermal stability of perovskite / tandem cells.

[0057] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0058] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0059] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0060] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0061] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A solar cell, characterized in that: The solar cell comprises: A body, the body having a front side (10) and a back side arranged opposite to each other; A plurality of insulating glue pads (20) are arranged on the front side (10) of the body, and the insulating glue pads (20) are arranged at least at the corners of the front side (10) and in the middle of the front side (10); the insulating glue pads (20) are made of acrylic material, and the maximum height of the insulating glue pads (20) is between 10 μm and 20 μm.

2. The solar cell according to claim 1, characterized in that: The cross-sectional area of ​​the insulating rubber base (20) gradually decreases from the bottom end to the top end.

3. The solar cell according to claim 2, characterized in that: The cross-sectional shape of the insulating rubber base (20) is circular or polygonal.

4. The solar cell according to claim 1, characterized in that: The insulating rubber platform (20) comprises an inner support platform (21) and an outer support platform (22); the outer support platform (22) is arranged in an annular shape on the outer side of the inner support platform (21); and the cross-sectional areas of the inner support platform (21) and the outer support platform (22) gradually decrease from the bottom end to the top end.

5. The solar cell according to claim 4, characterized in that: The height of the inner support platform (21) is higher than the height of the outer support platform (22).

6. The solar cell according to claim 4, characterized in that: The height of the outer edge of the inner support platform (21) relative to the front side (10) is 0, and / or the height of the inner edge of the outer support platform (22) relative to the front side (10) is 0.

7. The solar cell according to claim 4, characterized in that: The insulating rubber platform (20) further comprises a transition section (23), wherein the transition section (23) is located between the inner support platform (21) and the outer support platform (22), and the transition section (23) is respectively connected to the outer edge of the inner support platform (21) and the inner edge of the outer support platform (22), and the maximum height of the transition section (23) is lower than the height of the inner support platform (21) and lower than the height of the outer support platform (22).

8. The solar cell according to claim 7, characterized in that: The top end of the transition section (23) is a plane; or The transition section (23) has an outer edge, a middle portion and an inner edge that are arranged opposite to each other, and the height of the middle portion of the transition section (23) is lower than the height of the outer edge of the transition section (23) and the height of the inner edge of the transition section (23).

9. The solar cell according to claim 1, characterized in that: The plurality of insulating glue platforms (20) are distributed in an array on the front side (10), and the total area of ​​the bottoms of the plurality of insulating glue platforms (20) accounts for 1% to 6% of the area of ​​the front side (10).

10. A photovoltaic module, characterized in that: The photovoltaic module comprises the solar cell sheet according to any one of claims 1 to 9.

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