Photovoltaic module and photovoltaic component

Abstract

The embodiment of the disclosure relates to the photovoltaic field, and provides a photovoltaic module and a photovoltaic component wherein the photovoltaic module comprises: a plurality of battery strings arranged along a first direction, each battery string comprising a plurality of battery pieces arranged along a second direction; the first bus bar extends along the first direction and is electrically connected with the plurality of battery strings arranged along the first direction; the first shielding layer extends along the first direction, is positioned on the first bus bar and is opposite to the first bus bar; the second shielding layer extends along the second direction, is positioned on one side of the battery string in the first direction, and is connected with the first shielding layer; wherein the surface of the first shielding layer and the surface of the second shielding layer have the same or similar color as the surface of the battery piece. According to the technical scheme provided by the embodiment of the invention, the aesthetic degree of the photovoltaic module can be improved.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to the photovoltaic field, and in particular to a photovoltaic module and a photovoltaic component. Background Art

[0002] Solar cells are a type of photoelectric semiconductor sheet that uses sunlight to generate electricity directly. They are also called "solar chips" or "photovoltaics". As long as they are illuminated under certain conditions, they can instantly output voltage and generate current in a circuit. In physics, this is called solar photovoltaic (PV), or photovoltaic for short.

[0003] Photovoltaic modules generally refer to solar cell modules. Since the output voltage of a single solar cell is low, a certain number of single cells must be sealed in series or parallel to form a photovoltaic module. Summary of the invention

[0004] The embodiments of the present disclosure provide a photovoltaic module and a photovoltaic component, which can at least improve the aesthetics of the photovoltaic module.

[0005] According to some embodiments of the present disclosure, on the one hand, an embodiment of the present disclosure provides a photovoltaic module, comprising: a plurality of battery strings arranged along a first direction, the battery strings comprising a plurality of battery cells arranged along a second direction; a first bus bar, the first bus bar extending along the first direction, and electrically connected to the plurality of battery strings arranged along the first direction; a first shielding layer, the first shielding layer extending along the first direction, and being located on the first bus bar, directly opposite to the first bus bar; a second shielding layer, the second shielding layer extending along the second direction, being located on one side of the battery string in the first direction, and the second shielding layer being connected to the first shielding layer; wherein a surface of the first shielding layer and a surface of the second shielding layer are the same or similar in color to a surface of the battery cells.

[0006] In some embodiments, it also includes: a second bus bar, the second bus bar extends along the second direction, the second bus bar is electrically connected to the plurality of battery cells arranged along the second direction of the battery string, the second bus bar is electrically connected to the first bus bar, and at least a portion of the second bus bar is opposite to the second shielding layer.

[0007] In some embodiments, along the second direction, the width of the second shielding layer is greater than that of the second bus bar.

[0008] In some embodiments, it further includes: a packaging film, wherein the packaging film is used to cover the surfaces of the battery string, the first shielding layer, and the second shielding layer.

[0009] In some embodiments, the encapsulation film includes: a first film layer, the first film layer is opposite to the gap between the adjacent battery cells, and the color of the first film layer is the same as or similar to the surface color of the battery cell; and a second film layer, the second film layer covers the surface of the first film layer away from the battery cell.

[0010] In some embodiments, it also includes: a third blocking layer, the third blocking layer includes: a light-transmitting area and a light-shielding area, the light-transmitting area is opposite to the battery cell, the light-shielding area is opposite to the gap between adjacent battery cells, and the surface of the light-shielding area is the same or similar in color to the surface of the battery cell.

[0011] In some embodiments, along the second direction, the width of the light shielding area is greater than the gap between adjacent battery cells, and the difference between the width of the light shielding area and the gap between adjacent battery cells is 5-8 mm.

[0012] In some embodiments, in the second direction, the battery string includes a front side and a back side opposite to each other, and the third shielding layer is located on the back side of the battery string.

[0013] In some embodiments, the color of the first bus bar is the same as or similar to the surface color of the battery cell.

[0014] According to some embodiments of the present disclosure, on the other hand, a photovoltaic assembly is provided, comprising: a mounting hanger, which is fixedly connected to a roof and has a limiting space on the mounting hanger; a plurality of photovoltaic assemblies as described in some or all of the above embodiments, and adjacent photovoltaic assemblies are overlapped up and down, and the photovoltaic assemblies are snapped into the limiting space.

[0015] The technical solution provided by the embodiments of the present disclosure has at least the following advantages:

[0016] The battery string serves as the current generating carrier of the photovoltaic module. The first bus bar is used to collect the carriers on the battery string and serve as the output port. The first shielding layer is used to shield the first bus bar, and the first shielding layer is the same or similar in color to the surface of the battery cell, so as to avoid excessive color difference between the first bus bar and the battery string. The second shielding layer, which is the same or similar in color to the surface of the battery cell, is also used to improve the uniformity of the color of the photovoltaic module. Moreover, for the second shielding layer, only one side of the surface of the battery string is shielded, and the other side of the battery string can be used to overlap with the adjacent photovoltaic module, thereby reducing the cost while improving the aesthetics of the photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings, and these exemplified descriptions do not constitute a limitation on the embodiments. Unless otherwise specified, the pictures in the drawings do not constitute a scale limitation. In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the traditional technology, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A top view of a photovoltaic assembly provided by an embodiment of the present disclosure;

[0019] Figure 2 A top view of a photovoltaic assembly provided by an embodiment of the present disclosure;

[0020] Figure 3 A top view of a local structure of a photovoltaic assembly provided by an embodiment of the present disclosure;

[0021] Figure 4 A schematic diagram of a three-dimensional structure of a photovoltaic assembly provided in an embodiment of the present disclosure;

[0022] Figure 5 Another partial structural cross-sectional view of a photovoltaic module provided by an embodiment of the present disclosure;

[0023] Figure 6 A schematic diagram of the structure of a packaging film provided in an embodiment of the present disclosure;

[0024] Figure 7 A schematic diagram of a photovoltaic module connection structure provided by an embodiment of the present disclosure;

[0025] Figure 8 A schematic structural diagram of a photovoltaic component provided in one embodiment of the present disclosure;

[0026] Fig. 9 A schematic diagram of an enlarged local structure of a photovoltaic component provided in one embodiment of the present disclosure. DETAILED DESCRIPTION

[0027] As known from the background technology, currently, the color of the first bus bar is usually silver, and the color of the battery cell is blue or black. When the photovoltaic module is viewed from the front, the color difference between the first bus bar and the battery cell is large.

[0028] The disclosed embodiment provides a photovoltaic module, wherein a battery string serves as a current generating carrier of the photovoltaic module, a first bus bar is used to collect carriers on the battery string and serve as an output port, a first shielding layer is used to shield the first bus bar, and the first shielding layer is the same or similar in color to the surface of the battery cell, thereby avoiding excessive color difference between the first bus bar and the battery string, and a second shielding layer of the same or similar color to the surface of the battery cell is also used to improve the uniformity of the color of the photovoltaic module, and the second shielding layer only shields one side of the surface of the battery string, and the other side of the battery string can be used to overlap with an adjacent photovoltaic module, thereby reducing costs while improving the aesthetics of the photovoltaic module.

[0029] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0030] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0032] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0033] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0034] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0035] In the accompanying drawings corresponding to the embodiments of the present application, the thickness and area of ​​the layer are magnified for better understanding and ease of description. When describing a component (such as a layer, film, region or substrate) on another component or on the surface of another component, the component can be "directly" located on the surface of the other component, or a third component can be present between the two components. On the contrary, when describing a component on the surface of another component or when another component is formed or provided on the surface of a component, it means that there is no third component between the two components. In addition, when describing a component as "substantially" formed on another component, it means that the component is not formed on the entire surface (or front surface) of the other component, nor is it formed on a partial edge of the entire surface.

[0036] In the description of the embodiments of the present application, when a component "includes" another component, unless otherwise specified, other components are not excluded, and other components may be further included. In addition, when a component such as a layer, a film, a region, or a plate is referred to as being "on / located on" another component, it may be "directly on" the other component (i.e., located on the surface of the other component with no other components between them), or another component may exist in between. In addition, when a component such as a layer, a film, a region, a plate, etc. is "directly located on" another component, or when a component such as a layer, a film, a region, a plate, etc. is located on the surface of another component, it means that no other components are located in between.

[0037] The terms used in the description of the various embodiments described herein are only used to describe specific embodiments and are not intended to be limiting. As used in the description of the various embodiments described and in the appended claims, "the components" are also intended to include plural forms unless the context clearly indicates otherwise. Among them, components include components such as layers, films, regions, or plates.

[0038] The following will describe the various embodiments of the present disclosure in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present disclosure, many technical details are provided in order to enable the reader to better understand the embodiments of the present disclosure. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the embodiments of the present disclosure can be implemented.

[0039] Figure 1 A top view of a photovoltaic assembly provided by an embodiment of the present disclosure; Figure 2 Another top view of a photovoltaic assembly provided by an embodiment of the present disclosure; Figure 3 A top view of the third shielding layer provided in the embodiment of the present disclosure; Figure 4 A three-dimensional diagram of a battery string provided in one embodiment of the present disclosure; Figure 5 for Figure 4 A cross-section along the M2 direction; Figure 6 Schematic diagram of a packaging film provided by an embodiment of the present disclosure; it should be noted that, for ease of understanding, Figure 1 The first shielding layer and the second shielding layer are not shown. Figure 3 Only the third occlusion layer is shown. Figure 4 The packaging film and cover plate are not shown.

[0040] refer to Figures 1 to 6 The photovoltaic module may include a plurality of battery strings 100 arranged along a first direction X, and the battery string 100 includes a plurality of battery cells 110 arranged along a second direction Y.

[0041] The photovoltaic module may further include a first bus bar 101 extending along a first direction X and electrically connected to the plurality of battery strings 100 arranged along the first direction X.

[0042] The photovoltaic assembly may further include a first shielding layer 102 , which extends along the first direction X and is located on the first bus bar 101 and directly faces the first bus bar 101 .

[0043] The photovoltaic module may also include a second shielding layer 103, which extends along the second direction Y and is located on one side of the battery string 100 in the first direction X, and the second shielding layer 103 is connected to the first shielding layer 102; wherein the first shielding layer 102 and the second shielding layer 103 have the same or similar color as the surface of the battery cell 110.

[0044] In the disclosed embodiment, the battery string 100 serves as a current generating carrier of the photovoltaic module, the first bus bar 101 is used to collect the carriers on the battery string 100 and serve as an output port, the first shielding layer 102 is used to shield the first bus bar 101, and the first shielding layer 102 is the same or similar in color to the surface of the battery cell 110, thereby avoiding excessive color difference between the first bus bar 101 and the battery string 100, and the second shielding layer 103, which is the same or similar in color to the surface of the battery cell 110, is also used to improve the uniformity of the color of the photovoltaic module. Moreover, for the second shielding layer 103, only one side of the surface of the battery string 100 is shielded, and the other side of the battery string 100 can be used to overlap with adjacent photovoltaic modules, thereby reducing costs while improving the aesthetics of the photovoltaic module.

[0045] In some embodiments, the battery string 100 may include a plurality of battery cells 110 and a welding ribbon 120 for connecting adjacent battery cells in series, wherein the battery cells 110 include, but are not limited to, PERC cells (Passivated Emitter Rear Cell), IBC (Interdigitated Back Contact), TOPCon cells (Tunnel Oxide Passivated Contact), HIT / HJT cells (Heterojunction Technology), solar thin film cells, and stacked cells, or any combination thereof. Among them, solar thin film cells include, but are not limited to, perovskite solar thin film cells, copper indium selenide solar thin film cells, gallium arsenide solar thin film cells, and cadmium sulfide solar thin film cells. Stacked cells include, but are not limited to, perovskite cells superimposed on crystalline silicon cells, perovskite cells superimposed on perovskite cells, and perovskite cells superimposed on thin film cells; the welding ribbon 120 is usually a tinned copper ribbon or a tin-coated copper ribbon, which is used to electrically connect adjacent battery cells 110.

[0046] The first bus bar 101 is usually made of copper or other conductive materials, and has good conductivity and corrosion resistance. The present embodiment does not limit the material of the first bus bar 101, and other materials that can be used as the first bus bar can also be applied to the present embodiment.

[0047] The connection between the multiple battery strings 100 and the first bus bar 101 can be in series or in parallel, which can be selected according to actual conditions.

[0048] In some embodiments, the color of the first bus bar 101 may be the same or similar to the color of the surface of the cell 110. By changing the color of the first bus bar 101, the color of the surface of the photovoltaic module can be made consistent when the first shielding layer 102 does not completely shield the first bus bar 101, thereby further improving the aesthetics of the photovoltaic module.

[0049] It should be noted that in the embodiments of the present disclosure, the same color means: the color difference value of the two colors is less than or equal to 0.5NBS; similar colors mean: the color difference value of the two colors is greater than 0.5NBS and less than or equal to 1NBS. Taking the color of the surface of the battery cell 110 as black as an example, the color of the surface of the first bus bar 101 can also be black, and the color difference value between the black surface of the first bus bar 101 and the black surface of the battery cell is less than or equal to 1NBS.

[0050] The first shielding layer 102 is used to shield the surface of the first bus bar 101 so that the entire photovoltaic module appears to be uniform in color, for example, black as a whole, or the first shielding layer 102 is used to reduce the area of ​​different colors on the surface of the photovoltaic module, thereby improving the aesthetics of the photovoltaic module.

[0051] The first shielding layer 102 may be formed by sticking tape or coating.

[0052] In some embodiments, the first shielding layer 102 can directly cover the surface of the first bus bar 101. By directly covering the surface of the first bus bar 101, the installation of the first shielding layer 102 can be facilitated, and the installation accuracy of the first shielding layer 102 can be improved, thereby avoiding the situation where the first shielding layer 102 cannot completely cover the first bus bar 101, thereby improving the reliability of the first shielding layer 102 covering the entire surface of the first bus bar 101.

[0053] In some embodiments, the photovoltaic module may further include a cover plate 107 , and the first shielding layer 102 may be adhered to the surface of the cover plate 107 away from the solar cell 110 , or may be coated on the surface of the cover plate 107 away from the solar cell 110 .

[0054] In some embodiments, the second shielding layer 103 is located on one side of the battery string 100 in the first direction X. Like the first shielding layer 102, the second shielding layer 103 can also shield the edge of the photovoltaic module, and together with the first shielding layer 102, it is U-shaped. In other words, the photovoltaic module includes two edges arranged along the first direction X and two edges arranged along the second direction Y. The first shielding layer 102 can shield the two edges of the photovoltaic module arranged along the second direction Y, and the second shielding layer 103 can shield one edge of the photovoltaic module arranged along the first direction X. The remaining edge of the photovoltaic module can be used to overlap with the adjacent photovoltaic module. In this way, all four edges of the photovoltaic module are shielded, and the amount of the second shielding layer 103 on one of the edges is reduced, thereby reducing the production cost of the photovoltaic module while improving the aesthetics of the photovoltaic module.

[0055] In other embodiments, the second shielding layer 103 may also be located on two sides of the photovoltaic components arranged along the second direction Y, and the widths of the second shielding layer 103 located on the two sides may be different, wherein the second shielding layer 103 on one side has a first width, and the second shielding layer 103 on the other side has a second width, and the first width is greater than the second width, wherein one side of the second shielding layer 103 can be used to overlap with adjacent photovoltaic components, and a suitable space can be reserved according to the size of the overlap.

[0056] In some embodiments, the color of the second shielding layer 103 can be the same as or similar to the color of the surface of the battery cell 110. For example, taking the color of the surface of the battery cell 110 as black, the color of the surface of the second shielding layer 103 can also be black, and the color difference between the black surface of the second shielding layer 103 and the black surface of the battery cell 110 is less than or equal to 1NBS.

[0057] In some embodiments, the material of the second shielding layer 103 may be the same as the material of the first shielding layer 102 , and the material of the second shielding layer 103 and / or the material of the first shielding layer 102 may be a PET film or tape.

[0058] In some embodiments, the photovoltaic module may further include a second bus bar 104, the second bus bar 104 extends along the second direction Y, the second bus bar 104 is electrically connected to a plurality of battery cells 110 arranged along the second direction Y of the battery string 100, the second bus bar 104 is electrically connected to the first bus bar 101, and at least part of the second bus bar 104 is directly opposite to the second shielding layer 103. Multiple battery strings 100 can be connected in parallel through the second bus bar 104, so that a larger current can be output through the second bus bar 104, thereby further meeting the power demand.

[0059] In some embodiments, the second bus bar 104 and the first bus bar 101 also form a U-shape, with the first bus bar 101 serving as the two opposite sides of the U-shape and the second bus bar 104 serving as the bottom side of the U-shape, which are consistent with the overall morphology of the first shielding layer 102 and the second shielding layer 103. Moreover, in the embodiments of the present disclosure, the first shielding layer 102 and the second shielding layer 103 shield the first bus bar 101 and the second bus bar 104, thereby improving the aesthetics of the photovoltaic module.

[0060] In some embodiments, in the second direction Y, the width of the second shielding layer 103 is greater than the second bus bar 104. On the one hand, the second shielding layer 103 can completely shield the second bus bar 104, thereby improving the aesthetics of the photovoltaic module. On the other hand, the gap between the edge of the photovoltaic module and the battery string 100 can be shielded, thereby further improving the aesthetics of the photovoltaic module.

[0061] refer to Figure 4 and Figure 5 In some embodiments, the photovoltaic module may further include a packaging film 106, which is used to cover the surface of the battery string 100, the first shielding layer 102, and the second shielding layer 103. In other words, the first shielding layer 102 covers the surface of the first bus bar 101, which can improve the installation accuracy of the first shielding layer 102, thereby avoiding the situation where the first shielding layer 102 cannot completely shield the first bus bar 101, and reducing the risk of the first shielding layer 102 shielding the first bus bar 101.

[0062] In some embodiments, a second bus bar 104 is also included, and the packaging film 106 covers the surface of the second shielding layer 103, that is, the second shielding layer 103 directly covers the surface of the second bus bar 104, which can also facilitate the installation of the second shielding layer 103 and improve the installation accuracy of the second shielding layer 103, thereby avoiding the situation where the second shielding layer 103 cannot completely shield the second bus bar 104, and improving the possibility of using the second shielding layer 103 to completely shield the second bus bar 104.

[0063] The encapsulation film 106 may include a first encapsulation layer (not shown) and a second encapsulation layer (not shown), wherein the first encapsulation layer covers one of the front side or the back side of the battery cell, and the second encapsulation layer covers the other of the front side or the back side of the battery cell. Specifically, at least one of the first encapsulation layer or the second encapsulation layer may be an organic encapsulation film such as a polyvinyl butyral (PVB) film, an ethylene-vinyl acetate copolymer (EVA) film, a polyethylene-octene co-elastomer (POE) film, or a polyethylene glycol terephthalate (PET) film.

[0064] It is understandable that the first packaging layer and the second packaging layer have a dividing line before the lamination process. After the lamination process, there will no longer be the concept of the first packaging layer and the second packaging layer in the formed photovoltaic module, that is, the first packaging layer and the second packaging layer have formed an integral packaging film 106.

[0065] In some embodiments, the first shielding layer 102 and the second shielding layer 103 can also serve as part of the encapsulation film 106. Taking the first shielding layer 102 as an example, the encapsulation film 106 is a two-layer structure, in which a layer close to the battery cell 110 serves as the first shielding layer 102, and a layer away from the battery cell 110 serves as the encapsulation layer of the photovoltaic module. By allowing the first shielding layer 102 and the second shielding layer 103 to also serve as part of the encapsulation film 106, the process steps for forming the photovoltaic module can be reduced, thereby reducing the cost of the photovoltaic module.

[0066] Combined with reference Figure 2 and Figure 3 In some embodiments, the photovoltaic module may further include a third shielding layer 105, which may include a light-transmitting area 115 and a light-shielding area 125. The light-transmitting area 115 faces the cell 110, and the light-shielding area 125 faces the gap between adjacent cells 110. The light-shielding area 125 has the same or similar surface color as the cell 110. By facing the light-transmitting area 115 to the cell 110, the third shielding layer 105 may be prevented from affecting the light absorption of the cell 110, and by facing the light-shielding area 125 to the gap between adjacent cells 110, the aesthetics of the photovoltaic module may be further improved.

[0067] In some embodiments, the material of the third shielding layer 105 can be PVB film, EVA film or PET film, etc. The color of the third shielding layer 105 can be the same as or similar to the color of the surface of the battery cell 110. For example, taking the color of the surface of the battery cell 110 as black, the color of the surface of the third shielding layer 105 can also be black, and the color difference between the black surface of the third shielding layer 105 and the black surface of the battery cell 110 is less than or equal to 1NBS.

[0068] In some embodiments, the battery string 100 includes a relative front and back side, and the shading area 125 is located on the back side of the battery string 100. By setting the third shading layer 105 on the back side of the battery string 100, even if the shading area 125 of the third shading layer 105 is not completely aligned with the gap between the battery cells, for the battery string 100, it will not excessively affect the light absorption of the battery string 100, thereby improving the aesthetics of the photovoltaic module while reducing the risk of using the third shading layer 105 to block the gap between the battery string 100.

[0069] It should be noted that, in some embodiments, the cell string is a single-sided photovoltaic cell string, the front of the cell string can be used as a light-receiving surface for receiving incident light, and the back is used as a backlight surface. In some embodiments, the cell string is a double-sided cell string, then both the front and back of the cell string can be used as light-receiving surfaces, and can be used to receive incident light. It is understandable that the backlight surface referred to in the embodiments of the present disclosure can also receive incident light, but the degree of receiving the incident light is weaker than the degree of receiving the incident light by the light-receiving surface, and therefore is defined as a backlight surface.

[0070] In some embodiments, the material of the light-transmitting area 115 can be the same as the material of the light-shielding area 125. The difference is that pigments can be doped into the material of the light-shielding area 125. Taking the black color of the battery cell 110 as an example, black pigments can be doped into the material of the light-shielding area 125 to form a black light-shielding area 125.

[0071] In some embodiments, for the light-transmitting area 115 and the light-shielding area 125, the light-transmitting area 115 can be a transparent third blocking layer 105, and the light-shielding area 125 can be a third blocking layer 105 with a certain color. It can be understood that the certain color here means: having the same or similar color as the surface color of the battery cell 110. For example, if the color of the surface of the battery cell 110 is black, then the surface color of the light-shielding area 125 can be black.

[0072] In some embodiments, the color of the surface of the shading area 125 may be the same as or similar to the color of the surface of the solar cell 110 , so that the surface color of the entire photovoltaic module appears to be consistent.

[0073] In other embodiments, the light-transmitting area 115 may also be a hole on the third shielding layer 105. In other words, in the process of forming the third shielding layer 105, the entire surface of the third shielding layer 105 is first formed, and then the third shielding layer 105 is partially removed to make the third shielding layer 105 into a mesh shape, with the mesh holes facing the battery cell 110. The removed portion serves as the light-transmitting area 115 of the third shielding layer 105.

[0074] In some embodiments, in the second direction Y, the width of the shading area 125 is greater than the gap between adjacent cells 110, and the difference between the width of the shading area 125 and the gap between adjacent cells 110 is 5 to 8 mm. In other words, the shading area 125 is not only directly opposite to the gap between adjacent cells 110, but also blocks the surface of part of the cell 110. By setting the width of the shading area 125 to be greater than the gap between adjacent cells 110, the difficulty of alignment between the third shielding layer 105 and the photovoltaic module can be reduced, and the risk of the third shielding layer 105 and the gap being misaligned and exposed due to errors in the processing and installation process can be reduced, so as to ensure that the surface of the photovoltaic module is the same or similar color as much as possible, and to improve the aesthetics of the photovoltaic module as much as possible.

[0075] In some embodiments, the difference between the width of the shading area 125 and the gap between adjacent battery cells 110 can be 5 to 8 mm, for example, 6 mm, 6.3 mm, 6.7 mm, 7.2 mm, 7.5 mm or 7.9 mm, etc. For the width of the shading area 125, the larger the width of the shading area 125, the stronger the ability of the third blocking layer 105 to block the battery cells 110. However, for the third blocking layer 105, the larger the width of the shading area 125, the larger the area of ​​the battery cells 110 that absorb light is blocked. Therefore, by setting the difference between the width of the shading area 125 and the gap between adjacent battery cells 110 to 5 to 8 mm, the ability to block the battery cells 110 can be improved while reducing the area of ​​the battery cells 110 that absorb too much light, thereby avoiding affecting the photoelectric conversion efficiency of the battery cells 110.

[0076] The third shielding layer 105 can directly cover the surface of the battery string 100, so as to reduce the difficulty of the third shielding layer 105 shielding the gaps between the connected battery cells 110, thereby improving the aesthetics of the photovoltaic module.

[0077] In some embodiments, the battery string 100 includes a front side and a back side relative to each other, and the third shielding layer 105 is located on the back side of the battery string 100. It is understandable that, for the third shielding layer 105, the third shielding layer 105 is used to shield the gap between adjacent battery cells 110. Therefore, arranging the third shielding layer 105 on the back side of the battery string 100 can reduce the influence of the third shielding layer 105 on the light absorption of the battery string, avoid the third shielding layer 105 blocking too much light absorption area, and thus avoid the third shielding layer 105 affecting the photoelectric conversion efficiency of the solar cell.

[0078] In some embodiments, the third shielding layer 105 may also have a color that is the same or similar to the color of the surface of the cell 110. In this way, the third shielding layer 105 needs to be disposed on the back of the cell string 100 to prevent the third shielding layer 105 from affecting the light absorption of the cell 110, thereby reducing the difficulty of the entire process and preventing the third shielding layer 105 from affecting the performance of the photovoltaic module.

[0079] In some embodiments, the third shielding layer 105 can serve as a part of the encapsulation film 106, that is, the encapsulation film 106 can include two layers stacked one on top of the other, wherein the layer close to the battery cell 110 serves as the third shielding layer 105 for shielding the surface of the photovoltaic module, thereby making the surface color of the entire photovoltaic module consistent, and the layer away from the battery cell 110 serves as a package.

[0080] Combined with reference Figure 5 and Figure 6 In some embodiments, the packaging film 106 includes: a first film layer 116, the first film layer 116 is directly opposite to the gap between adjacent battery cells 110, and the color of the first film layer 116 is the same as or similar to the surface color of the battery cell 110; a second film layer 126, the second film layer 126 covers the surface of the first film layer 116 away from the battery cell. In other words, the packaging film 106 is provided with two layers, wherein the first film layer 116 is used to block the gap between adjacent battery cells 110, and the second film layer 126 covers the surface of the first film layer 116 to play a packaging role.

[0081] It should be noted that, for a photovoltaic module, the photovoltaic module may include a front packaging film and a back packaging film, and the above-mentioned packaging film 106 includes a first film layer 116 and a second film layer 126, which means that the front packaging film or the back packaging film includes the first film layer 116 and the second film layer 126.

[0082] It is understandable that during the production process of the photovoltaic module, there is a certain gap between the second adhesive film layer 126 and the battery cell 110. In the subsequent lamination process, as the packaging film 106 melts, the second adhesive film layer 126 will fill the gap and will not affect the appearance of the photovoltaic module. By setting the packaging film 106 as two layers, it can simultaneously shield the gap between the connected battery cells 110 to improve the aesthetics of the photovoltaic module and play a role in packaging.

[0083] In some embodiments, the photovoltaic module may further include a cover plate 107 , and the cover plate 107 is used to cover the surface of the packaging film 106 away from the battery string 100 .

[0084] In some embodiments, the cover plate 107 may be a glass cover plate, a plastic cover plate or the like with a light-transmitting function. Specifically, the surface of the cover plate 107 facing the encapsulation film 106 may be a concave-convex surface, thereby increasing the utilization rate of the incident light. The cover plate 107 includes a first cover plate and a second cover plate, the first cover plate is opposite to the first encapsulation layer, and the second cover plate is opposite to the second encapsulation layer.

[0085] In some embodiments, the first shielding layer 102 can also cover the surface of the cover plate 107 away from the battery string 100. It can be understood that when the first shielding layer 102 covers the surface of the cover plate 107 away from the battery string 100, the first shielding layer 102 can be installed on the surface of the cover plate 107 in advance. In this way, the process time can be reduced when the photovoltaic modules are subsequently manufactured; and if the first shielding layer 102 is set on the surface of the first bus bar 101, the first shielding layer 102 cannot be installed on the surface of the first bus bar 101 in advance, because in the process of connecting the first bus bar 101 with the battery string, the first bus bar 101 will also be processed, such as welding. If the first shielding layer 102 is installed on the surface of the first bus bar 101 in advance, then the first shielding layer 102 will be damaged when the first bus bar 101 is installed, and there will be no such problem if the first shielding layer 102 is installed on the surface of the cover plate 107.

[0086] In some embodiments, the second shielding layer 103 can also cover the surface of the cover plate 107 away from the battery string 100. It can be understood that when the second shielding layer 103 covers the surface of the cover plate 107 away from the battery string 100, the second shielding layer 103 can be installed on the surface of the cover plate 107 in advance. In this way, the process time can be reduced when the photovoltaic modules are subsequently manufactured; and if the second shielding layer 103 is set on the surface of the battery string 100, the second shielding layer 103 cannot be installed on the surface of the battery string 100 in advance, because in the process of connecting the first bus bar 101 with the battery string, the first bus bar 101 will also be processed, such as welding. If the second shielding layer 103 is installed on the surface of the battery string 100 in advance, the second shielding layer 103 will be damaged when the first bus bar 101 is installed, and there will be no such problem if the second shielding layer 103 is installed on the surface of the cover plate 107.

[0087] In some embodiments, the cover plate 107 includes a first cover plate and a second cover plate. The first shielding layer 102 may cover the surface of the first cover plate, and the second shielding layer 103 may cover the surface of the second cover plate.

[0088] In some embodiments, the third shielding layer 105 can also be set on the surface of the cover 107 away from the battery string 100. The principle is the same as the first shielding layer 102 and / or the second shielding layer 103. By setting the third shielding layer 105 on the surface of the cover 107, the process time for manufacturing photovoltaic modules can be reduced, thereby reducing the cost of photovoltaic modules.

[0089] In the disclosed embodiment, the battery string 100 serves as a current generating carrier of the photovoltaic module, the first bus bar 101 is used to collect the carriers on the battery string 100 and serve as an output port, the first shielding layer 102 is used to shield the first bus bar 101, and the first shielding layer 102 is the same or similar to the surface color of the battery cell 110, so as to avoid excessive color difference between the first bus bar 101 and the battery string 100, and the second shielding layer 103 which is the same or similar to the surface color of the battery cell 110 is also used to improve the uniformity of the color of the photovoltaic module, and the second shielding layer 103 only shields one side of the surface of the battery string 100, and the other side of the battery string 100 can be used to overlap with the adjacent photovoltaic module, so as to reduce the cost while improving the aesthetics of the photovoltaic module.

[0090] Another embodiment of the present disclosure further provides a photovoltaic component, which may include some or all of the photovoltaic components in the above-mentioned embodiments. The photovoltaic component provided by another embodiment of the present disclosure will be described below. It should be noted that the same or corresponding parts of the above-mentioned embodiments can refer to the corresponding description of the above-mentioned embodiments and will not be repeated below.

[0091] refer to Figures 7 to 9 , Figure 7 A schematic diagram of a photovoltaic module connection structure provided by an embodiment of the present disclosure; Figure 8 A schematic structural diagram of a photovoltaic component provided in one embodiment of the present disclosure; Fig. 9 for Figure 8 Enlarged schematic diagram of the structure in the dashed box.

[0092] In some embodiments, the photovoltaic component may include: a mounting hanger 11 , the mounting hanger 11 is fixedly connected to a roof 12 , and a limiting space is provided on the mounting hanger 11 .

[0093] In some embodiments, the photovoltaic component may include: a plurality of photovoltaic modules 10 as described in some or all of the above embodiments, and adjacent photovoltaic modules 10 are overlapped up and down, and the photovoltaic modules 10 are clamped in the limited space.

[0094] A plurality of mounting hangers 11 and a plurality of photovoltaic modules 10 together constitute a photovoltaic component. The photovoltaic module 10 is installed on the roof 12 through the mounting hangers 11. Specifically, the roof 12 is provided with a plurality of water-adjusting strips 13 extending along the inclined direction of the roof 12 and a plurality of mounting hangers 11 perpendicular to the water-adjusting strips 13. The water-adjusting strips 13 are fixed to the roof 12 through steel nails, and the mounting hangers 11 are fixed to the water-adjusting strips 13 through steel nails. The mounting hangers 11 are fixed to the mounting hangers 11 through screws or other fixing parts, and the photovoltaic module 10 is detachably connected to the mounting hangers 11 to install the photovoltaic module 10 on the roof. In this structure, the photovoltaic module 10 can replace part of the original traditional tiles on the roof 12 and be directly used as a building material for the roof 12, which can save the cost of the roof 12 and reduce the load-bearing requirements of the roof 12.

[0095] The mounting hanger 11 is provided with a limited space, and at least a portion of the first frame 21 of the same photovoltaic component 10 is accommodated in the limited space of one mounting hanger 11, and at least a portion of the second frame 22 is accommodated in the limited space of another adjacent mounting hanger 11, so that the two adjacent mounting hangers 11 are respectively connected to the first frame 21 and the second frame 22, so that the photovoltaic component 10 can be stably installed on the roof 12.

[0096] In the disclosed embodiment, two adjacent mounting hangers 11 are respectively limited and matched with the first frame 21 and the second frame 22 of the same photovoltaic module 10, so as to limit the movement of the photovoltaic module 10, thereby improving the installation stability of the photovoltaic module 10, and thus improving the wind resistance of each photovoltaic module 10. In addition, the photovoltaic module 10 and the mounting hanger 11 are connected by a limiting structure, without the need for fixing parts such as screws, so that the installation and removal of a single photovoltaic module 10 is facilitated, and the installation and removal efficiency of the photovoltaic module 10 is higher.

[0097] By setting the installation hanger 11, the photovoltaic module 10 can be fixed on the roof 12 to provide power for the house. Moreover, for the photovoltaic module 10, adjacent photovoltaic modules 10 are overlapped up and down, and the overlapping surface is the side of the photovoltaic module 10 away from the second shielding layer 103, so that the edge of the photovoltaic module 10 can be shielded by the first shielding layer 102, the second shielding layer 103 and the adjacent photovoltaic module 10, so that the surface color difference of the photovoltaic module 10 can be smaller.

[0098] Those skilled in the art can understand that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the embodiments of the present disclosure. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the embodiments of the present disclosure, so the protection scope of the embodiments of the present disclosure shall be based on the scope defined in the claims.

Claims

1. A photovoltaic module, characterized in that: include: A plurality of battery strings arranged along a first direction, wherein the battery strings include a plurality of battery cells arranged along a second direction; a first bus bar extending along the first direction and electrically connected to the plurality of battery strings arranged along the first direction; a first shielding layer, the first shielding layer extending along the first direction and being located on the first bus bar and facing the first bus bar; a second shielding layer, which extends along the second direction, is located on one side of the battery string in the first direction, and is connected to the first shielding layer; The surface of the first shielding layer and the surface of the second shielding layer are the same or similar in color to the surface of the battery cell.

2. The photovoltaic module according to claim 1, characterized in that: Also includes: A second bus bar, the second bus bar extends along the second direction, the second bus bar is electrically connected to the plurality of battery cells arranged in the battery string along the second direction, the second bus bar is electrically connected to the first bus bar, and at least a portion of the second bus bar is opposite to the second shielding layer.

3. The photovoltaic module according to claim 2, characterized in that: Along the second direction, the width of the second shielding layer is greater than that of the second bus bar.

4. The photovoltaic module according to claim 1, characterized in that: Also includes: A packaging film, wherein the packaging film is used to cover the surfaces of the battery string, the first shielding layer and the second shielding layer.

5. The photovoltaic module according to claim 4, characterized in that: The packaging film comprises: A first adhesive film layer, wherein the first adhesive film layer is directly opposite to the gap between the adjacent battery cells, and the color of the first adhesive film layer is the same as or similar to the surface color of the battery cell; A second adhesive film layer, wherein the second adhesive film layer covers a surface of the first adhesive film layer away from the battery cell.

6. The photovoltaic module according to claim 1, characterized in that: Also includes: The third shielding layer comprises: a light-transmitting area and a light-shielding area, wherein the light-transmitting area is opposite to the battery cell, the light-shielding area is opposite to the gap between adjacent battery cells, and the surface of the light-shielding area is the same or similar in color to the surface of the battery cell.

7. The photovoltaic module according to claim 6, characterized in that: Along the second direction, the width of the shading area is greater than the gap between adjacent battery cells, and the difference between the width of the shading area and the gap between adjacent battery cells is 5-8 mm.

8. The photovoltaic module according to claim 6, characterized in that: The battery string includes a front side and a back side opposite to each other, and the third shielding layer is located on the back side of the battery string.

9. The photovoltaic module according to claim 1, characterized in that: The color of the first bus bar is the same as or similar to the surface color of the battery cell.

10. A photovoltaic component, characterized in that: include: An installation hanger, the installation hanger is fixedly connected to the roof, and a limiting space is provided on the installation hanger; A plurality of photovoltaic modules as described in any one of claims 1 to 9 above, wherein adjacent photovoltaic modules are overlapped up and down, and the photovoltaic modules are snapped into the limiting space.

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