Photovoltaic module, power generation device and electric equipment

Abstract

The utility model provides a photovoltaic module, a power generation device and electric equipment, the photovoltaic module comprises a first conductive integrated board, a second conductive integrated board and a battery piece unit, the battery piece unit is located between the first conductive integrated board and the second conductive integrated board, the battery piece unit comprises a battery piece group, the battery piece group comprises battery pieces, and the battery pieces are arranged in the battery piece group. The battery piece comprises a light facing surface and a backlight surface which are opposite; the first conductive integrated board is electrically connected to the light-facing surface, and the second conductive integrated board is electrically connected to the backlight surface. The photovoltaic module is high in production efficiency and production yield.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic devices, and particularly relates to a photovoltaic module, a power generation device and a power consumption device. BACKGROUND

[0002] When the photovoltaic cell is irradiated by sunlight, an electric current is formed inside the photovoltaic cell, which is led out through metal electrodes. The metal electrodes can be divided into main grids and auxiliary grids. The auxiliary grids are used to collect photo-generated carriers to form an electric current, and the main grids are used to converge the electric current of the auxiliary grids.

[0003] In the related art, in order to reduce the shading of the photovoltaic cell, a photovoltaic cell without a main grid appears. Multiple photovoltaic cells without a main grid are connected through a solder strip, so that multiple photovoltaic cells form a cell string. Multiple cell strings are arranged, stacked and laminated through a process flow to form a photovoltaic module.

[0004] However, in the process of connecting multiple photovoltaic cells through a solder strip, the high soldering temperature easily leads to a low production yield of the photovoltaic module, and the production process flow is complex. Invention content

[0005] Therefore, the present application provides a photovoltaic module, a power generation device and a power consumption device. The production processes of a first conductive integrated plate, a second conductive integrated plate and a cell piece are separated. The first conductive integrated plate, the second conductive integrated plate and the cell piece are processed to form the first conductive integrated plate, the second conductive integrated plate and the cell piece, respectively. Then, the first conductive integrated plate, the second conductive integrated plate and the cell piece are assembled to form the photovoltaic module. Thus, the problems of a low production yield and a complex production process flow of the photovoltaic module in the related art are solved.

[0006] In a first aspect, the present application provides a photovoltaic module. The photovoltaic module comprises a first conductive integrated plate, a second conductive integrated plate and a cell piece unit. The cell piece unit is located between the first conductive integrated plate and the second conductive integrated plate. The cell piece unit comprises at least one cell piece group. The cell piece group comprises at least two cell pieces. The cell piece comprises opposite light-receiving surfaces and back surfaces.

[0007] The first conductive integrated plate is electrically connected to the light-receiving surface of the cell piece. The second conductive integrated plate is electrically connected to the back surface of the cell piece.

[0008] In a possible implementation manner, the first conductive integrated plate comprises a first bearing layer, a first insulating adhesive layer and a first conductive circuit layer. The first bearing layer is connected to the first conductive circuit layer through the first insulating adhesive layer. The first conductive circuit layer is electrically connected to the light-receiving surface of the cell piece.

[0009] And / or, the second conductive integrated plate comprises a second bearing layer, a second insulating adhesive layer and a second conductive circuit layer, the second bearing layer is connected with the second conductive circuit layer through the second insulating adhesive layer, and the second conductive circuit layer is electrically connected to the back surface of the battery piece.

[0010] In a possible implementation, the first bearing layer comprises a functional structure layer, an adhesive layer and a substrate layer arranged in sequence, and the substrate layer is arranged close to the first insulating adhesive layer.

[0011] In a possible implementation, the functional structure layer comprises at least one of an ultraviolet-proof layer, a fiber-reinforced layer and a water vapor barrier layer.

[0012] In a possible implementation, the functional structure layer comprises an ultraviolet-proof layer, a fiber-reinforced layer and a water vapor barrier layer, and the ultraviolet-proof layer, the fiber-reinforced layer and the water vapor barrier layer are connected in sequence, and the water vapor barrier layer is arranged close to the adhesive layer.

[0013] In a possible implementation, the photovoltaic module further comprises a first cover plate and a first connecting layer, the first cover plate, the first connecting layer and the first bearing layer are arranged in sequence, and the first cover plate is located on a side of the first bearing layer away from the battery piece.

[0014] And / or, the photovoltaic module further comprises a second cover plate and a second connecting layer, the second cover plate, the second connecting layer and the second bearing layer are arranged in sequence, and the second cover plate is located on a side of the second bearing layer away from the battery piece.

[0015] In a possible implementation, a side of the first bearing layer facing the battery piece is provided with a first groove, the first conductive circuit layer is located in the first groove, and the first conductive circuit layer protrudes from the first groove.

[0016] And / or, a side of the second bearing layer facing the battery piece is provided with a second groove, the second conductive circuit layer is located in the second groove, and the second conductive circuit layer protrudes from the second groove.

[0017] In a possible implementation, the first conductive circuit layer comprises a plurality of first conductive wires, the second conductive circuit layer comprises a plurality of second conductive wires, and the first conductive wires and the second conductive wires each independently extend along a first direction.

[0018] In the same battery piece group, each battery piece is electrically connected in sequence through the first conductive wires and the second conductive wires.

[0019] In a possible implementation, at least two battery pieces are arranged along a first direction to form a battery piece group, and the battery piece unit comprises at least two battery piece groups arranged along a second direction, wherein the first direction and the second direction are arranged at an angle.

[0020] And / or, the second conductive circuit layer further comprises a bus conductive line, the bus conductive line is located at the outer side of the battery piece group, and each battery piece group is electrically connected with the bus conductive line.

[0021] In a possible implementation, the electrode polarity of the light-receiving surface of each of the two adjacent battery pieces is opposite.

[0022] In a possible implementation, the photovoltaic module further comprises a diode, the first conductive circuit layer and the second conductive circuit layer are electrically connected with the diode, and the diode is connected to the side of the second insulating adhesive layer away from the battery pieces.

[0023] In a possible implementation, the second insulating adhesive layer is provided with at least two conductive windows, and the at least two conductive windows comprise a first conductive window and a second conductive window.

[0024] And / or, the diode has a first lead and a second lead with opposite electrode polarities, the first lead is electrically connected with the first conductive circuit layer, the connection position of the first lead and the first conductive circuit layer is at the first conductive window, the second lead is electrically connected with the second conductive circuit layer, and the connection position of the second lead and the second conductive circuit layer is at the second conductive window.

[0025] In a possible implementation, each battery piece in the same battery piece group is provided with a diode.

[0026] Or, the same battery piece group is provided with at least two diodes.

[0027] Or, a plurality of diodes are arranged between the two adjacent battery piece groups.

[0028] In a second aspect, the present application further provides a power generation device, comprising the photovoltaic module provided in the first aspect, and the photovoltaic module is used to convert the light energy of sunlight into electric energy.

[0029] In a third aspect, the present application further provides a power consumption device, comprising a power consumption device and the power generation device provided in the second aspect, and the power generation device is used to supply power to the power consumption device.

[0030] The photovoltaic module, power generation device and electric equipment provided by the application, the photovoltaic module comprises a first conductive integrated plate, a second conductive integrated plate and a cell piece unit, the cell piece unit comprises a cell piece group, the cell piece group comprises cell pieces, and the cell pieces comprise a light-receiving surface and a back surface. The cell pieces are arranged to convert the light energy of sunlight into electric energy, the first conductive integrated plate is arranged to electrically connect the light-receiving surfaces of the cell pieces, the second conductive integrated plate is arranged to electrically connect the back surfaces of the cell pieces, and then the current of the photovoltaic module is derived. In the production and processing, the production processes of the first conductive integrated plate, the second conductive integrated plate and the cell pieces can be separated, so that the first conductive integrated plate, the second conductive integrated plate and the cell pieces can be processed separately and then assembled, thereby the production time of the photovoltaic module can be shortened, and the production efficiency of the photovoltaic module is improved. Moreover, the cell pieces can be arranged on the first conductive integrated plate or the second conductive integrated plate to form the cell piece unit, and then the first conductive integrated plate, the cell piece unit and the second conductive integrated plate are combined, without adopting the mode of welding a plurality of cell pieces by using a welding strip to form a cell string, thereby the influence of high-temperature welding on the cell pieces is avoided, and the production yield of the photovoltaic module is improved.

[0031] In addition to the technical problems solved by the embodiments of the application described above, the technical features constituting the technical solutions and the beneficial effects brought by the technical features, the other technical problems solved by the photovoltaic module, power generation device and electric equipment provided by the application, the other technical features included in the technical solutions and the beneficial effects brought by the technical features will be further described in detail in the specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0033] Figure 1 A structural schematic diagram of the photovoltaic module provided by the embodiments of the application;

[0034] Figure 2 Another structural schematic diagram of the photovoltaic module provided by the embodiments of the application;

[0035] Figure 3 A structural schematic diagram of the first conductive integrated plate in the photovoltaic module provided by the embodiments of the application;

[0036] Figure 4 A structural schematic diagram of the second conductive integrated plate in the photovoltaic module provided by the embodiments of the application;

[0037] Figure 5 A structure diagram of a second conductive integrated plate and a diode in a photovoltaic module according to an embodiment of the present application is provided;

[0038] Figure 6 A connection diagram of a diode and a cell in a photovoltaic module according to an embodiment of the present application is provided;

[0039] Figure 7 Another connection diagram of a diode and a cell in a photovoltaic module according to an embodiment of the present application is provided;

[0040] Figure 8 Still another connection diagram of a diode and a cell in a photovoltaic module according to an embodiment of the present application is provided.

[0041] Explanation of reference signs:

[0042] 100 - first conductive integrated plate; 110 - first bearing layer; 111 - functional structure layer; 112 - adhesive layer; 113 - base layer; 120 - first insulating adhesive layer; 130 - first conductive circuit layer; 131 - first conductive line;

[0043] 200 - second conductive integrated plate; 210 - second bearing layer; 220 - second insulating adhesive layer; 221 - conductive window; 221a - first conductive window; 221b - second conductive window; 230 - second conductive circuit layer; 231 - second conductive line; 232 - converging conductive line;

[0044] 300 - cell unit; 310 - cell group; 311 - cell;

[0045] 400 - first cover plate;

[0046] 500 - first connection layer;

[0047] 600 - second cover plate;

[0048] 700 - second connection layer;

[0049] 800 - diode. DETAILED DESCRIPTION

[0050] In order to make the objects, technical solutions and advantages of the present application clearer, the following will be combined with the drawings of the preferred embodiments of the present application to make the technical solutions in the embodiments of the present application more clearly described. In the drawings, the same or similar notations represent the same or similar parts or parts having the same or similar functions throughout. The described embodiments are part of the embodiments of the present application, rather than all the embodiments. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. The embodiments of the present application will be described in detail below with reference to the drawings.

[0051] In the description of the present application, it should be noted that unless explicitly defined and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixed connection, or indirect connection through an intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0053] The terms "first", "second", "third" (if any) in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0054] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or display including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or displays.

[0055] In the related art, in order to reduce the shading of the photovoltaic cell, a photovoltaic cell without a main grid appears, a plurality of photovoltaic cells without a main grid are connected through a welding strip, and then the plurality of photovoltaic cells form a cell string, and a plurality of cell strings are arranged, stacked, and laminated, etc. Process flow to form a photovoltaic module.

[0056] However, in the process of connecting a plurality of photovoltaic cells by using a welding strip, due to the high welding temperature, it is easy to cause the production yield of the photovoltaic module to be low, and the production process flow is complex.

[0057] Therefore, the embodiments of the present application provide a photovoltaic module and a power generation device to solve the problems of low production yield and complex production process flow of the photovoltaic module in the related art.

[0058] The specific embodiments of the photovoltaic module, the power generation device and the power consumption device provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0059] Referring to FIGS. 1 to 3, Figure 1 and Figure 2 The photovoltaic module provided by the embodiments of the present application includes a first conductive integrated plate 100, a second conductive integrated plate 200, and a cell piece unit 300, the cell piece unit 300 is located between the first conductive integrated plate 100 and the second conductive integrated plate 200, the cell piece unit 300 includes at least one cell piece group 310, the cell piece group 310 includes at least two cell pieces 311, the at least two cell pieces 311 are arranged along a first direction, and the cell piece 311 has two opposite surfaces, which are a light-receiving surface and a back surface.

[0060] The first conductive integrated plate 100 includes a first bearing layer 110, a first insulating adhesive layer 120, and a first conductive circuit layer 130, the first bearing layer 110 is connected to the first conductive circuit layer 130 through the first insulating adhesive layer 120, and the first conductive circuit layer 130 is electrically connected to the light-receiving surface.

[0061] The second conductive integrated plate 200 includes a second bearing layer 210, a second insulating adhesive layer 220, and a second conductive circuit layer 230, the second bearing layer 210 is connected to the second conductive circuit layer 230 through the second insulating adhesive layer 220, and the second conductive circuit layer 230 is electrically connected to the back surface.

[0062] In the embodiment, the photovoltaic module has opposite light-receiving sides and light-irradiating sides, the cell unit 300 is used to absorb light energy of sunlight and convert the light energy into electric energy, that is, when sunlight irradiates the light-receiving surface of the cell 311, an electric current is generated in the cell 311, the first conductive integrated plate 100 and the second conductive integrated plate 200 are used to support the cell unit 300, thereby supporting the plurality of cells 311 between the first conductive integrated plate 100 and the second conductive integrated plate 200, and the first conductive integrated plate 100 and the second conductive integrated plate 200 can electrically connect the plurality of cells 311, thereby guiding the electric current of the cell unit 300 to an external device such as a junction box.

[0063] Specifically, the first conductive integrated plate 100 is arranged on the light-receiving surface of the cell 311, and can include a first supporting layer 110, a first insulating adhesive layer 120, and a first conductive circuit layer 130. The first supporting layer 110 serves to support and bear, the first conductive circuit layer 130 is used to electrically connect the light-receiving surfaces of the plurality of cells 311, thereby guiding the electric current of the cell unit 300, and the first insulating adhesive layer 120 is used to connect the first conductive circuit layer 130 and the first supporting layer 110, thereby combining the first conductive circuit layer 130 and the first supporting layer 110 through a low-temperature lamination or adhesive process, so as to form the first conductive integrated plate 100.

[0064] The second conductive integrated plate 200 is arranged on the light-irradiating surface of the cell 311, and can include a second supporting layer 210, a second insulating adhesive layer 220, and a second conductive circuit layer 230. The second supporting layer 210 serves to support and bear, the second conductive circuit layer 230 is used to electrically connect the light-irradiating surfaces of the plurality of cells 311, thereby guiding the electric current of the cell unit 300, and the second insulating adhesive layer 220 is used to connect the second conductive circuit layer 230 and the second supporting layer 210, thereby integrating the second conductive circuit layer 230 and the second supporting layer 210 through a low-temperature lamination or adhesive process, so as to form the second conductive integrated plate 200.

[0065] It can be understood that the first insulating adhesive layer 120 can also insulate the gaps of the first conductive circuit layer 130, thereby preventing the first conductive circuit layer 130 from leaking electricity, and the second insulating adhesive layer 220 can also insulate the gaps of the second conductive circuit layer 230, thereby preventing the second conductive circuit layer 230 from leaking electricity.

[0066] It should be noted that in the related art, a plurality of cells 311 are connected by solder strips, thereby connecting the plurality of cells 311 in series. However, the temperature during soldering is high, and soldering generates soldering stress, which reduces the working efficiency of the cells 311, and the production process is also relatively complex, which reduces the production efficiency of the photovoltaic module.

[0067] However, in the photovoltaic module provided by the embodiment, the production processes of the first conductive integrated plate 100, the cell sheet 311 and the second conductive integrated plate 200 can be separated, and the production of the first conductive integrated plate 100, the cell sheet 311 and the second conductive integrated plate 200 can be synchronized, thereby shortening the production time of the photovoltaic module, canceling the process of welding the plurality of cell sheets 311 into a cell string by using the solder strip in advance in the related art, simplifying the production process of the photovoltaic module, and improving the production efficiency of the photovoltaic module.

[0068] After the first conductive integrated plate 100, the cell sheet 311 and the second conductive integrated plate 200 are respectively processed, the first conductive integrated plate 100, the cell sheet 311 and the second conductive integrated plate 200 can be combined by a low-temperature lamination or bonding process, and the first conductive circuit layer 130 and the cell sheet 311 are alloyed, and the cell sheet 311 and the second conductive circuit layer 230 are alloyed, so that the circuits of the first conductive circuit layer 130, the cell sheet 311 and the second conductive circuit layer 230 are conductive.

[0069] Since the first conductive integrated plate 100 and the second conductive integrated plate 200 are combined into a whole by the low-temperature lamination or bonding process of the first conductive circuit layer 130, the first insulating bonding layer 120 and the first bearing layer 110, and the second conductive circuit layer 230, the second insulating bonding layer 220 and the second bearing layer 210 are combined into a whole by the low-temperature lamination or bonding process, and the first conductive integrated plate 100 and the cell sheet 311, and the second conductive integrated plate 200 and the cell sheet 311 are connected together by the low-temperature lamination or bonding process to form the photovoltaic module, the photovoltaic module of the embodiment can effectively avoid the adverse effects of high temperature on the cell sheet 311.

[0070] Since the light-receiving surface of the cell sheet 311 is provided with the first conductive circuit layer 130, and the back surface of the cell sheet 311 is provided with the second conductive circuit layer 230, in the same cell group 310, the two adjacent cell sheets 311 are arranged in opposite positive and negative electrode modes, and the gap between the two adjacent cell sheets 311 can be adjusted, thereby facilitating the compatible close arrangement of the cell sheets 311 with a larger size, and improving the space utilization and compatibility of the photovoltaic module.

[0071] The first carrier layer 110 and the second carrier layer 210 can be made of a light flexible organic polymer material, such as polyethylene terephthalate (PET), ethylene-tetrafluoroethylene copolymer (ETFE), polycarbonate (PC), polymethyl methacrylate (PMMA), polyvinylidene fluoride (PVDF), ethylene chlorotrifluoroethylene (ECTFE), fluorinated ethylene propylene (FEP), etc. The thickness of the first carrier layer 110 and the second carrier layer 210 is between 20-500 μm. Since the first carrier layer 110 is disposed on the light side, the first carrier layer 110 can be made of a transparent material, and the light transmittance of the first carrier layer 110 is greater than or equal to 85%. The second carrier layer 210 is disposed on the back light side, and the second carrier layer 210 can be doped with a white, black or colored composite resin material.

[0072] The first insulating adhesive layer 120 and the second insulating adhesive layer 220 can be made of a transparent, adhesive and ultraviolet aging resistant insulating material, such as EVA, POE, EPE, PVB or silicone, etc. The thickness of the first insulating adhesive layer 120 and the second insulating adhesive layer 220 is between 50-500 μm.

[0073] The photovoltaic module provided by the embodiment of the present application comprises a first conductive integrated plate 100, a second conductive integrated plate 200 and a cell piece unit 300, the cell piece unit 300 comprises a cell piece group 310, the cell piece group 310 comprises cell pieces 311, the cell pieces 311 comprise a light-receiving surface and a back surface, the first conductive integrated plate 100 comprises a first bearing layer 110, a first insulating adhesive layer 120 and a first conductive circuit layer 130, and the second conductive integrated plate 200 comprises a second bearing layer 210, a second insulating adhesive layer 220 and a second conductive circuit layer 230. The cell pieces 311 are arranged to convert the light energy of the sunlight into the electric energy, the first conductive circuit layer 130 is arranged to electrically connect the light-receiving surface of the cell pieces 311, the second conductive circuit layer 230 is arranged to electrically connect the back surface of the cell pieces 311, thereby leading out the current of the photovoltaic module, the first insulating adhesive layer 120 is arranged to connect the first bearing layer 110 and the first conductive circuit layer 130 and insulate and protect the first conductive circuit layer 130, the second insulating adhesive layer 220 is arranged to connect the second bearing layer 210 and the second conductive circuit layer 230 and insulate and protect the second conductive circuit layer 230, the first bearing layer 110 and the second bearing layer 210 are arranged to bear the cell pieces 311 and fix the first conductive circuit layer 130 and the second conductive circuit layer 230, and the first bearing layer 110, the first insulating adhesive layer 120 and the first conductive circuit layer 130 are integrated together by a low-temperature laminating or adhesive process, and the second bearing layer 210, the second insulating adhesive layer 220 and the second conductive circuit layer 230 are integrated together by a low-temperature laminating or adhesive process, so as to avoid the adverse effects of high temperature on the cell pieces 311, simplify the production process flow of the photovoltaic module and shorten the production time of the photovoltaic module, thereby improving the production efficiency and yield of the photovoltaic module.

[0074] Referring to Figure 1 In a possible implementation, the first bearing layer 110 comprises a functional structure layer 111, an adhesive layer 112 and a substrate layer 113, the functional structure layer 111, the adhesive layer 112 and the substrate layer 113 are sequentially connected in layers, the adhesive layer 112 is arranged to connect the functional structure layer 111 and the substrate layer 113, and the substrate layer 113 is connected to the first insulating adhesive layer 120.

[0075] That is to say, in this arrangement, the first bearing layer 110 can bear the cell pieces 311 and the first conductive circuit layer 130, the first bearing layer 110 is provided with the functional structure layer 111, the functional structure layer 111 can have the functions of preventing ultraviolet rays, structural reinforcement or water vapor barrier, and the first bearing layer 110 can also protect the cell pieces 311, so that the heavy glass protective cover plate can be cancelled, thereby facilitating the light weight of the photovoltaic module.

[0076] For the photovoltaic module, after the first conductive integrated plate 100, the cell sheet 311 and the second conductive integrated plate 200 are respectively processed to form, the first conductive integrated plate 100, the cell sheet 311 and the second conductive integrated plate 200 are first laminated and then laminated, so as to constitute the photovoltaic module, and the production process flow is relatively simple.

[0077] In some embodiments, the functional structure layer 111 includes at least one of an ultraviolet-proof layer, a fiber reinforced layer and a water vapor barrier layer. The ultraviolet-proof layer can improve the ultraviolet resistance of the photovoltaic module, the fiber reinforced layer can strengthen the mechanical strength of the first bearing layer 110, and the water vapor barrier layer can effectively block water vapor from entering the photovoltaic module. Therefore, the functional structure layer 111 helps the photovoltaic module to realize lightweight and improve the reliability of the photovoltaic module.

[0078] For example, the functional structure layer 111 can include one of the ultraviolet-proof layer, the fiber reinforced layer and the water vapor barrier layer, or the functional structure layer 111 can include any two of the ultraviolet-proof layer, the fiber reinforced layer and the water vapor barrier layer, or the functional structure layer 111 can include the ultraviolet-proof layer, the fiber reinforced layer and the water vapor barrier layer. In this way, it is beneficial to flexibly set the photovoltaic module according to the use environment, thereby improving the weather resistance of the photovoltaic module.

[0079] In some embodiments, when the functional structure layer 111 includes the ultraviolet-proof layer, the fiber reinforced layer and the water vapor barrier layer, the ultraviolet-proof layer, the fiber reinforced layer and the water vapor barrier layer are sequentially laminated and connected, and the water vapor barrier layer is connected with the adhesive layer 112.

[0080] In this way, the ultraviolet-proof layer is located on the side of the functional structure layer 111 close to the sunlight, thereby absorbing the ultraviolet rays in the sunlight, thereby improving the ultraviolet resistance of the photovoltaic module, and the fiber reinforced layer is located in the middle, which can effectively enhance the strength of the functional structure layer 111, thereby effectively supporting the ultraviolet-proof layer and the water vapor barrier layer.

[0081] The ultraviolet-proof layer can include ultraviolet absorbers such as PVF, PVDF, PCTFE, ECTFE, and ETFE, the fiber reinforced layer can include glass fiber, quartz glass fiber and polyester, and the water vapor barrier layer can use PET barrier film and PEN barrier film.

[0082] Referring to Figure 2 In a possible implementation, the photovoltaic module can further include a first cover plate 400, a first connecting layer 500, a second cover plate 600 and a second connecting layer 700. The first cover plate 400 is connected to the side of the first bearing layer 110 away from the cell sheet 311 through the first connecting layer 500, and the second cover plate 600 is connected to the side of the second bearing layer 210 away from the cell sheet 311 through the second connecting layer 700.

[0083] In this way, the first cover plate 400 can protect and transmit light for the battery piece unit 300 and the first conductive integrated plate 100, and the second cover plate 600 can protect the battery piece unit 300 and the second conductive integrated plate 200.

[0084] It can be understood that the first cover plate 400, the first conductive integrated plate 100, the battery piece unit 300, the second conductive integrated plate 200 and the second cover plate 600 are laminated in sequence and then laminated, and then assembled into a photovoltaic module, and the production process of the photovoltaic module is relatively simple.

[0085] The first cover plate 400 can be a glass cover plate, and the second cover plate 600 can be a glass cover plate, a metal cover plate, a polymer cover plate, etc., which are not limited in the embodiment of the application.

[0086] In a possible implementation, one side of the first bearing layer 110 facing the battery piece 311 is provided with a first groove, and the first conductive circuit layer 130 is arranged in the first groove and protrudes from the first groove, so as to facilitate the connection between the first conductive circuit layer 130 and the battery piece 311.

[0087] And / or, one side of the second bearing layer 210 facing the battery piece 311 is provided with a second groove, and the second conductive circuit layer 230 is arranged in the second groove and protrudes from the second groove, so as to facilitate the connection between the second conductive circuit layer 230 and the battery piece 311.

[0088] That is, the first groove can be etched on one side of the first bearing layer 110 facing the battery piece 311 according to the arrangement position of the first conductive circuit layer 130, the first conductive circuit layer 130 is placed in the first groove, then the first conductive circuit layer 130 is positioned by the first groove, the first insulating adhesive layer 120 is filled in the gap between the first conductive circuit layer 130 and the first groove, and finally the first bearing layer 110, the first insulating adhesive layer 120 and the first conductive circuit layer 130 are connected together by low-temperature lamination or adhesion.

[0089] Similarly, the second groove can be etched on one side of the second bearing layer 210 facing the battery piece 311 according to the arrangement position of the second conductive circuit layer 230, the second conductive circuit layer 230 is placed in the second groove, then the second conductive circuit layer 230 is positioned by the second groove, the second insulating adhesive layer 220 is filled in the gap between the second conductive circuit layer 230 and the second groove, and finally the second bearing layer 210, the second insulating adhesive layer 220 and the second conductive circuit layer 230 are connected together by low-temperature lamination or adhesion.

[0090] In a specific setup, the first groove can be etched on the side of the first carrier layer 110 facing the battery sheet 311, the second groove can be etched on the side of the second carrier layer 210 facing the battery sheet 311, or the first groove can be etched on the side of the first carrier layer 110 facing the battery sheet 311 and the second groove can be etched on the side of the second carrier layer 210 facing the battery sheet 311. The etching method of the first groove and the second groove can be laser, electrochemistry or mechanical method, etc., which is not limited in the embodiments of the present application.

[0091] Referring to Figure 3 and Figure 4 In some embodiments, the first conductive line layer 130 includes a plurality of first conductive lines 131, and the second conductive line layer 230 includes a plurality of second conductive lines 231. The first conductive lines 131 and the second conductive lines 231 both extend along a first direction. In the same battery sheet group 310, each battery sheet 311 is electrically connected in sequence by the first conductive lines 131 and the second conductive lines 231.

[0092] In a possible implementation, the battery sheet unit 300 includes at least two battery sheet groups 310, and the at least two battery sheet groups 310 are arranged along a second direction. The second conductive line layer 230 further includes a bus conductive line 232. The bus conductive line 232 is located on the outer side of the battery sheet group 310 so as to be led out. Each battery sheet group 310 is electrically connected to the bus conductive line 232.

[0093] Figure 3 Fig. 1 shows one arrangement of the first conductive lines 131, Figure 3 wherein one dashed box represents the layout position of one battery sheet 311, Figure 4 Fig. 2 shows one arrangement of the second conductive lines 231 and the bus conductive line 232, Figure 4 wherein one dashed box represents the layout position of one battery sheet 311. The first direction can refer to the X direction in Figure 1 , Figure 3 and Figure 4 The second direction can refer to the Y direction in Figure 3 and Figure 4 .

[0094] It should be noted that, Figure 3 and Figure 4 The width of the battery sheet 311 is along the first direction, and the length of the battery sheet 311 is along the second direction, but Figure 3 and Figure 4 The examples do not constitute a limitation on the present application, and the length of the battery sheet 311 can also be along the first direction, and the width of the battery sheet 311 can also be along the second direction. In addition, the length of part of the battery sheet 311 can be along the first direction, and the length of part of the battery sheet can be along the second direction.

[0095] In Figure 3 and Figure 4 For example, the light-receiving surface of the first cell 311 and the light-receiving surface of the second cell 311 are connected by the first conductive wire 131, the light-receiving surface of the third cell 311 and the light-receiving surface of the fourth cell 311 are connected by the first conductive wire 131, and so on, the light-receiving surface of the Nth cell 311 and the light-receiving surface of the (N+1)th cell 311 are connected by the first conductive wire 131, and the light-receiving surface of the (N+2)th cell 311 is connected to the bus conductive wire 232 by the first conductive wire 131. The back surface of the second cell 311 and the back surface of the third cell 311 are connected by the second conductive wire 231, the back surface of the fourth cell 311 and the back surface of the fifth cell 311 are connected by the second conductive wire 231, and so on, the back surface of the (N+1)th cell 311 and the back surface of the (N+2)th cell 311 are connected by the second conductive wire 231, and the back surface of the first cell 311 is connected to the bus conductive wire 232 by the second conductive wire 231.

[0096] In this way, in the same cell group 310, each cell 311 can be connected in series by the first conductive wire 131 and the second conductive wire 231, different cell groups 310 can be connected in series or parallel by the bus conductive wire 232, and finally the current is led out to an external device by the bus conductive wire 232.

[0097] In some embodiments, in the first direction, the electrode polarity of the light-receiving surfaces of two adjacent cells 311 is opposite, and / or, in the second direction, the electrode polarity of the light-receiving surfaces of two adjacent cells 311 is opposite.

[0098] That is, in the first direction, one of the light-receiving surfaces of two adjacent cells 311 is positive and the other is negative, and adjacent cells 311 are arranged in a positive-negative electrode interval manner. And / or, in the second direction, one of the light-receiving surfaces of two adjacent cells 311 is positive and the other is negative, and adjacent cells 311 are arranged in a positive-negative electrode interval manner.

[0099] Referring to Figure 5 As shown, in order to reduce the hot spot effect of the photovoltaic module, in a possible implementation, the photovoltaic module further includes a diode 800, the first conductive wire layer 130 and the second conductive wire layer 230 are electrically connected to the diode 800, and the diode 800 is connected to the side of the second insulating adhesive layer 220 away from the cell 311.

[0100] In related technologies, the diode 800 is located outside the junction box of the photovoltaic module, which results in a large junction box size. In this embodiment, the diode 800 is built into the photovoltaic module, which reduces the size of the junction box. Furthermore, since there is more space available to arrange the diode 800, the design of the diode 800 can be diversified, which helps to improve the heat spot protection performance of the photovoltaic module and thus improve the working efficiency of the photovoltaic module.

[0101] Furthermore, for certain special applications, such as integrated rooftop photovoltaic panels and building-integrated photovoltaic panels, the photovoltaic modules in this embodiment can be flexibly configured to connect to the junction box as needed. For example, the junction box can be located on the side of the photovoltaic module to facilitate transportation and concealment during installation.

[0102] The diode 800 can also be connected to the second insulating adhesive layer 220 by lamination, which can reduce the amount of glue used to pot the junction box and simplify the production process.

[0103] Reference Figure 5 As shown, in some embodiments, the second insulating adhesive layer 220 is provided with at least two conductive windows 221, and the connection portion between the diode 800 and the first conductive line layer 130, as well as the connection portion between the diode 800 and the second conductive line layer 230, are all located in the conductive windows 221.

[0104] Because the diode 800 is connected to the side of the second insulating adhesive layer 220 away from the solar cell 311, by opening multiple conductive windows 221 on the second insulating adhesive layer 220, the first conductive line layer 130 and the diode 800, as well as the second conductive line layer 230 and the diode 800, can be easily connected, thereby connecting the diode 800 to the circuit of the photovoltaic module, thereby reducing the hot spot effect of the photovoltaic module through the diode 800.

[0105] Specifically, at least two conductive windows 221 may include a first conductive window 221a and a second conductive window 221b. The diode 800 has a first lead and a second lead with opposite polarities. The first lead is electrically connected to the first conductive line layer 130, and the connection point between the first lead and the first conductive line layer 130 is located in the first conductive window 221a. The second lead is electrically connected to the second conductive line layer 230, and the connection point between the second lead and the second conductive line layer 230 is located in the second conductive window 221b.

[0106] Reference Figure 6 As shown, in some embodiments, in the same cell group 310, each cell 311 is provided with a corresponding diode 800. Alternatively, refer to... Figure 7As shown, the same battery piece group 310 is provided with at least two diodes 800, and at least two battery pieces 311 are provided with one diode 800 correspondingly. Alternatively, the same battery piece group 310 can be provided with two diodes 800, one battery piece 311 is provided with one diode 800, and the remaining battery pieces 311 are provided with another diode 800. In this arrangement, when the local shielding only affects the battery pieces 311 connected in parallel with the same diode 800, the entire battery piece group 310 will not be affected, thereby effectively reducing the hot spot effect of the photovoltaic module and reducing the failure probability of the diode 800.

[0107] Alternatively, referring to Figure 8 As shown, in some embodiments, a plurality of diodes 800 are arranged between adjacent battery piece groups 310. In this way, when a single diode 800 is damaged, the damaged diode 800 will not cause other diodes 800 to fail, thereby ensuring that at least one diode 800 can play a role in reducing the hot spot effect, thereby effectively reducing the hot spot effect of the photovoltaic module.

[0108] In order to improve the heat dissipation capacity of the diode 800, so as to ensure that the diode 800 works at a suitable temperature, thereby reducing the damage rate of the diode 800, the second cover plate 600 can be made of aluminum.

[0109] In addition, the embodiment of the present application also provides a power generation device, which includes the photovoltaic module provided by the above-mentioned embodiments, and the photovoltaic module is used to convert the light energy of sunlight into electrical energy. The number of photovoltaic modules can be one or more. When the power generation device has multiple photovoltaic modules, the multiple photovoltaic modules can be connected in series to increase the output voltage, or the multiple photovoltaic modules can be connected in parallel to increase the output current, or the multiple photovoltaic modules can be connected in a mixed manner of series and parallel connection, thereby increasing the output voltage and the output current. In specific implementation, the connection mode can be set as needed, and the embodiment does not limit the connection mode.

[0110] It can be understood that the power generation device can also include an inverter assembly and an energy storage assembly. The inverter assembly can convert the direct current of the photovoltaic module into alternating current, and the energy storage assembly can store the converted electrical energy. For example, the power generation device can be a photovoltaic power station.

[0111] The structure and working principle of the photovoltaic module have been described in detail in the foregoing embodiments, and will not be described again.

[0112] The embodiment of the present application also provides a power consumption device, which includes a power consumption device and the power generation device of the above-mentioned embodiments, and the power generation device is used to supply power to the power consumption device.

[0113] For example, the electrical device can be a vehicle, the electrical apparatus can be an electric motor, the power generation apparatus can provide electric energy to the electric motor, and the electric motor can convert the electric energy into mechanical energy. For another example, the electrical device can be a lamp, the electrical apparatus can be a light source, the power generation apparatus can convert light energy of sunlight into electric energy, and then provide the electric energy to the light source.

[0114] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A photovoltaic module, characterized by, The application relates to a solar cell module, which comprises a first conductive integrated plate (100), a second conductive integrated plate (200) and a cell unit (300), wherein the cell unit (300) is arranged between the first conductive integrated plate (100) and the second conductive integrated plate (200), the cell unit (300) comprises at least one cell group (310), the cell group (310) comprises at least two cells (311), and the cell (311) comprises opposite light-receiving surfaces and light-irradiating surfaces. The first conductive integrated plate (100) comprises a first bearing layer (110) and a first conductive circuit layer (130) arranged in layers, the first conductive circuit layer (130) is electrically connected to the light-receiving surfaces of the cells (311), the first bearing layer (110) comprises a functional structure layer (111) and a substrate layer (113) arranged in layers, the substrate layer (113) is arranged close to the cells (311) relative to the functional structure layer (111), and the second conductive integrated plate (200) is electrically connected to the light-irradiating surfaces of the cells (311). The functional structure layer (111) comprises an ultraviolet-proof layer, a fiber-reinforced layer and a water-vapor barrier layer, the ultraviolet-proof layer, the fiber-reinforced layer and the water-vapor barrier layer are arranged in layers in sequence, and the water-vapor barrier layer is arranged close to the substrate layer (113).

2. The photovoltaic module of claim 1, wherein, The first conductive integrated plate (100) comprises a first insulating adhesive layer (120), and the first bearing layer (110) is connected to the first conductive circuit layer (130) through the first insulating adhesive layer (120). The second conductive integrated plate (200) comprises a second bearing layer (210), a second insulating adhesive layer (220) and a second conductive circuit layer (230), the second bearing layer (210) is connected to the second conductive circuit layer (230) through the second insulating adhesive layer (220), and the second conductive circuit layer (230) is electrically connected to the light-irradiating surfaces of the cells (311).

3. The photovoltaic module of claim 2, wherein, The first bearing layer (110) comprises an adhesive layer (112), and the functional structure layer (111), the adhesive layer (112) and the substrate layer (113) are arranged in layers in sequence.

4. The photovoltaic module of claim 2, wherein, The application further comprises a first cover plate (400) and a first connecting layer (500), the first cover plate (400), the first connecting layer (500) and the first bearing layer (110) are arranged in layers in sequence, and the first cover plate (400) is arranged on a side of the first bearing layer (110) away from the cells (311). The application further comprises a second cover plate (600) and a second connecting layer (700), the second cover plate (600), the second connecting layer (700) and the second bearing layer (210) are arranged in layers in sequence, and the second cover plate (600) is arranged on a side of the second bearing layer (210) away from the cells (311).

5. The photovoltaic module according to any of claims 2-4, characterized in that, The first bearing layer (110) is provided with a first groove on the side facing the battery piece (311), and the first conductive circuit layer (130) is located in the first groove and protrudes from the first groove; And / or, the second bearing layer (210) is provided with a second groove on the side facing the battery piece (311), and the second conductive circuit layer (230) is located in the second groove and protrudes from the second groove.

6. The photovoltaic module according to any of claims 2-4, wherein, The first conductive circuit layer (130) comprises a plurality of first conductive lines (131), and the second conductive circuit layer (230) comprises a plurality of second conductive lines (231), each of the first conductive lines (131) and the second conductive lines (231) independently extends along a first direction; In the same battery piece group (310), each battery piece (311) is electrically connected by the first conductive lines (131) and the second conductive lines (231).

7. The photovoltaic module of claim 6, wherein, At least two battery pieces (311) are arranged along the first direction to form the battery piece group (310), and the battery piece unit (300) comprises at least two battery piece groups (310) arranged along a second direction, and the first direction and the second direction are arranged at an angle. And / or, the second conductive circuit layer (230) further comprises a bus conductive line (232) located on the outside of the battery piece group (310), and each battery piece group (310) is electrically connected to the bus conductive line (232).

8. The photovoltaic module according to any of claims 1-4, wherein, The electrode polarity of the light-receiving surface of two adjacent battery pieces (311) is opposite.

9. The photovoltaic module according to any of claims 2-4, wherein, The battery piece unit (300) further comprises a diode (800), and the first conductive circuit layer (130) and the second conductive circuit layer (230) are electrically connected to the diode (800), and the diode (800) is connected to the side of the second insulating adhesive layer (220) away from the battery piece (311).

10. The photovoltaic module of claim 9, wherein, The second insulating adhesive layer (220) is provided with at least two conductive windows (221), and the at least two conductive windows (221) comprise a first conductive window (221a) and a second conductive window (221b). And / or, the diode (800) has a first lead and a second lead with opposite electrode polarities, the first lead is electrically connected to the first conductive circuit layer (130), the connection position of the first lead and the first conductive circuit layer (130) is located in the first conductive window (221a), the second lead is electrically connected to the second conductive circuit layer (230), and the connection position of the second lead and the second conductive circuit layer (230) is located in the second conductive window (221b).

11. The photovoltaic module of claim 9, wherein, In the same battery piece group (310), each battery piece (311) is provided with one diode (800); Or, each battery piece group (310) is provided with at least two diodes (800). Alternatively, several diodes (800) are arranged between two adjacent battery piece groups (310).

12. A power generation device characterized by comprising: A photovoltaic module as claimed in any of claims 1 to 11 for converting light energy of sunlight into electrical energy.

13. An electrical device, characterized by An electrical device and a power generation device as claimed in claim 12, the power generation device being used to supply power to the electrical device.

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