Conductive connecting piece, solar cell module and photovoltaic system

Abstract

The utility model is suitable for the field of photovoltaic technology, and provides a conductive connecting piece, a solar cell module and a photovoltaic system. The conductive connecting piece comprises a first bonding layer and a conductive layer which are stacked in sequence; the first bonding layer is used for bonding a battery piece; a plurality of linear grooves are formed in the first bonding layer, the linear grooves are arranged in the first direction and extend in the second direction, the first direction intersects with the second direction, and the positions of the linear grooves correspond to electrodes of the battery piece; the linear groove is used for accommodating a conductive block, and the conductive layer is electrically connected with an electrode of the battery piece through the conductive block. According to the conductive connecting piece, the conductive layer is electrically connected with the electrode of the battery piece through the conductive block accommodated in the first bonding layer, so that the conductive connecting piece can be used for connecting the electrode of the battery piece, a welding strip can be omitted, additional positioning arrangement and dispensing fixation of the welding strip are not needed, and the manufacturing efficiency of the solar battery assembly can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic technology field especially relates to a kind of electrically conductive connecting piece, solar cell module and photovoltaic system. BACKGROUND

[0002] In the manufacturing process of solar cell module, the related art usually needs to position and arrange tab on cell and point gum fixed. In this way, the setting steps of tab are more cumbersome, which leads to the manufacturing efficiency of solar cell module is lower.

[0003] Therefore, how to improve the manufacturing efficiency of solar cell module has become a problem to be solved. SUMMARY

[0004] The utility model provides a kind of electrically conductive connecting piece, solar cell module and photovoltaic system to solve the technical problem of the manufacturing efficiency of solar cell module in the related art is lower.

[0005] The utility model embodiment is realized as follows, the utility model provides a kind of electrically conductive connecting piece, solar cell module and photovoltaic system.Electrically conductive connecting piece is used for solar cell module, comprising: first adhesive layer and conductive layer are sequentially stacked;The first adhesive layer is used for bonding cell;The first adhesive layer forms multiple linear grooves, the linear groove is arranged along first direction, the linear groove extends along second direction, the first direction and the second direction intersect, the position of the linear groove corresponds with the electrode of the cell;The linear groove is used for accommodating conductive block, and the conductive layer is electrically connected with the electrode of the cell by the conductive block.

[0006] Further, the cell includes first edge and second edge arranged along the second direction, and the linear groove includes first end and second end arranged along the second direction, the distance between the first end and the first edge is less than or equal to 3mm, the distance between the second end and the second edge is less than or equal to 3mm, and the linear groove continuously extends from the first end to the second end.

[0007] Further, the solar cell module includes a plurality of cells, and the adjacent two cells are a first cell and a second cell respectively;The first cell includes third edge, and the second cell includes fourth edge, and the third edge and the fourth edge are arranged along the second direction;The linear groove includes third end and fourth end arranged along the second direction, the distance between the third end and the third edge is less than or equal to 3mm, the distance between the fourth end and the fourth edge is less than or equal to 3mm, and the linear groove continuously extends from the third end to the fourth end.

[0008] Further, the conductive connecting piece further comprises a second adhesive layer, the second adhesive layer is arranged on the side of the conductive layer away from the first adhesive layer, and is used for connecting the back plate of the solar cell module.

[0009] Further, the second adhesive layer comprises a first adhesive part and a first bonding part arranged in sequence, the first adhesive part is arranged on the side of the conductive layer away from the first adhesive layer, and the first bonding part is arranged on the side of the first adhesive part away from the conductive layer.

[0010] Further, the cell piece is a main grid cell piece, and the extension direction of the linear groove is the same as the extension direction of the main grid of the cell piece.

[0011] Further, the cell piece is a main grid cell piece, and the extension direction of the linear groove is the same as the extension direction of the main grid of the cell piece.

[0012] Further, the width of the single linear groove ranges from 0.2mm to 2mm.

[0013] Further, the conductive layer comprises a substrate and a circuit pattern on the surface of the substrate, and the circuit pattern is a metal foil pattern or an electromagnetic sputtering pattern.

[0014] Further, the conductive connecting piece further comprises an isolation film, and the isolation film covers the first adhesive layer.

[0015] Further, the isolation film at least partially covers the linear groove.

[0016] The utility model embodiment further provides a solar cell module, the solar cell module comprises a plurality of cell pieces and the conductive connecting piece, the cell piece is laminated in the conductive connecting piece, the conductive connecting piece is equipped with the conductive block in the linear groove, and the conductive block is used for electrically connecting the electrode of the cell piece.

[0017] The utility model embodiment further provides a photovoltaic system, and the photovoltaic system comprises the solar cell module.

[0018] Therefore, the conductive connecting piece can be used for electrically connecting the electrode of the cell piece, so that the solder strip can be omitted, and the solder strip does not need to be additionally positioned, arranged and fixed by glue dispensing, so that the manufacturing efficiency of the solar cell module is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings in the following description only illustrate some of the embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0020] Figure 1 A module schematic diagram of a photovoltaic system provided by an embodiment of the present application is shown in the figure.

[0021] Figure 2 A structure schematic diagram of a solar cell module provided by an embodiment of the present application is shown in the figure.

[0022] Figure 3 A structure schematic diagram of an electrically conductive connecting piece provided by an embodiment of the present application is shown in the figure.

[0023] Figure 4 A structure schematic diagram of an electrically conductive connecting piece provided by another embodiment of the present application is shown in the figure.

[0024] Figure 5 A structure schematic diagram of an electrically conductive connecting piece provided by an embodiment of the present application is shown in the figure.

[0025] Figure 6 A top view of an electrically conductive connecting piece provided by an embodiment of the present application is shown in the figure.

[0026] Figure 7 A top view of an electrically conductive connecting piece provided by another embodiment of the present application is shown in the figure.

[0027] Figure 8 A connection schematic diagram of an electrically conductive connecting piece and a cell provided by still another embodiment of the present application is shown in the figure.

[0028] Figure 9 A connection schematic diagram of an electrically conductive connecting piece and a first cell and a second cell provided by still another embodiment of the present application is shown in the figure.

[0029] Figure 10 A structure schematic diagram of an electrically conductive layer in an electrically conductive connecting piece provided by the present application is shown in the figure.

[0030] Main element symbol explanation: 1000, photovoltaic system; 1001, solar cell module; 100, conductive connecting piece; 200, cell piece; 300, front plate; 400, back plate; 500, third adhesive layer; 201, first edge; 202, second edge; 210, first cell piece; 220, second cell piece; 2101, third edge; 2201, fourth edge; 101, conductive block; 10, isolation film; 20, first adhesive layer; 30, conductive layer; 40, second adhesive layer; 21, linear groove; 22, connecting part; 31, substrate; 32, circuit pattern; 41, first adhesive part; 42, first bonding part; 211, first end; 212, second end; 213, third end; 214, fourth end. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further detailed in combination with the drawings and examples. The examples described below by referring to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model. In addition, it should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0032] In the description of the utility model, it should be understood that the terms "length", "width", "upper", "lower", "top", "bottom", "transverse", "longitudinal" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model 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, therefore, it cannot be understood as limiting the utility model.

[0033] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0034] In the description of the utility model, it is necessary to explain that, unless there are explicit provisions and limitations, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, it can also be detachable connection, or integrally connected, it can be mechanical connection, it can also be electrical connection or can communicate with each other, it can be directly connected, it can also be indirectly connected through an intermediate medium, it can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0035] In the utility model, unless there are explicit provisions and limitations, the first feature is "on" or "under" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through other features between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0036] The following disclosure provides many different embodiments or examples for implementing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the utility model. In addition, the utility model can refer to the same reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, which does not indicate the relationship between the various embodiments and / or settings discussed by itself. In addition, the utility model provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0037] Please refer to Figure 1 And Figure 2 The photovoltaic system 1000 in the embodiment of the utility model can include the solar cell module 1001 in the embodiment of the utility model, the solar cell module 1001 in the embodiment of the utility model can include a plurality of cell pieces 200 and the conductive connecting piece 100 in the embodiment of the utility model, and the cell piece 200 is stacked in the conductive connecting piece 100. The linear groove 21 of the conductive connecting piece 100 is provided with the conductive block 101, and the conductive block 101 is used to electrically connect the electrodes of the adjacent two cell pieces 200.

[0038] The plurality of cell pieces 200 in the solar cell module 1001 can be sequentially connected in series by the welding ribbons to form a cell string. The cell strings in the solar cell module 1001 can be connected in series, in parallel, or in a combination of series and parallel to realize the current output in parallel, for example, the connection between the cell strings can be realized by the bus bar.

[0039] Referring to Figures 2 to 10 The conductive connecting piece 100 is used for the solar cell module 1001. The conductive connecting piece 100 comprises: a first adhesive layer 20 and a conductive layer 30 which are sequentially stacked; the first adhesive layer 20 is used for bonding the cell piece 200; the first adhesive layer 20 forms a plurality of linear grooves 21, the linear grooves 21 are arranged along a first direction, the linear grooves 21 extend along a second direction, and the first direction intersects the second direction. The position of the linear groove 21 corresponds to the electrode of the cell piece 200; the linear groove 21 is used for accommodating the conductive block 101, and the conductive layer 30 electrically connects the electrodes of the cell piece 200 through the conductive block 101.

[0040] Therefore, the conductive connecting piece 100 can be used to connect the electrodes of the cell piece 200, so that the welding ribbons can be omitted, and the welding ribbons do not need to be additionally positioned, arranged and fixed by glue dispensing, which is beneficial to improve the manufacturing efficiency of the solar cell module 1001.

[0041] Specifically, the electrical connection mode of the conductive connecting piece 100 and the cell piece 200 can be that the conductive layer 30 in one conductive connecting piece 100 is electrically connected with the electrodes of one cell piece 200 through the conductive block 101, so that the conductive connecting piece 100 can converge the current generated by the electrodes of the cell piece 200.

[0042] Alternatively, one conductive connecting piece 100 can be electrically connected with the electrodes of two adjacent cell pieces 200, so that the conductive layer 30 electrically connects the electrodes of the two adjacent cell pieces 200 through the conductive block 101. This is not limited.

[0043] Specifically, the electrodes of the cell piece 200 can be positive or negative.

[0044] It is worth noting that the conductive layer 30 electrically connects the electrodes of the two adjacent cell pieces 200 through the conductive block 101 means that the conductive layer 30 is electrically connected with a first electrode of one cell piece 200 through the conductive block 101, and the conductive layer 30 is electrically connected with a second electrode of another adjacent cell piece 200 through the conductive block 101, and the polarities of the first electrode and the second electrode are opposite or the same.

[0045] Specifically, in the embodiment of the utility model, the two adjacent battery pieces 200 which are electrically connected with the conductive connecting piece 100 can be in series or in parallel.

[0046] For example, when the two adjacent battery pieces 200 which are electrically connected with the conductive connecting piece 100 are in series. The conductive layer 30 is electrically connected with the first electrode of one battery piece 200 through the conductive block 101, and at the same time, the conductive layer 30 is electrically connected with the second electrode of the adjacent other battery piece 200 through the conductive block 101, the polarities of the first electrode and the second electrode are opposite, at this time, the polarities of the first electrode and the second electrode are opposite. Wherein, the first electrode can be positive or negative, and the second electrode can be positive or negative, which is not limited here.

[0047] For example, when the two adjacent battery pieces 200 which are electrically connected with the conductive connecting piece 100 are in parallel. The conductive layer 30 is electrically connected with the first electrode of one battery piece 200 through the conductive block 101, and at the same time, the conductive layer 30 is electrically connected with the second electrode of the adjacent other battery piece 200 through the conductive block 101, the polarities of the first electrode and the second electrode are opposite, at this time, the polarities of the first electrode and the second electrode are opposite.

[0048] Specifically, the battery piece 200 can be a battery piece 200 with main grid or a battery piece 200 without main grid. For the battery piece 200 with main grid, the electrode of the battery piece 200 is main grid and fine grid. For the battery piece 200 without main grid, the electrode of the battery piece 200 is fine grid.

[0049] It is worth noting that the "linear groove 21" refers to a long strip-shaped groove or groove structure. Optionally, the linear groove 21 can extend along a straight line. The linear groove 21 can also extend along a curve or be wavy, extend in a broken line manner.

[0050] In one possible implementation, the conductive connecting piece 100 further comprises an isolation film 10, the isolation film 10, the first adhesive layer 20 and the conductive layer 30 are sequentially laminated. The isolation film 10 covers the first adhesive layer 20.

[0051] Therefore, since the isolation film 10 covers the first adhesive layer 20, the first adhesive layer 20 can be protected before the conductive connecting piece 100 is connected to the battery piece 200, so that the first adhesive layer 20 is more stable when adhering the battery piece 200. The isolation film 10 covers the first adhesive layer 20.

[0052] Specifically, as Figure 3 and Figure 4As shown, the isolation film 10 is a protective structure of the conductive connecting piece 100. In a natural state, the isolation film 10 is located at the outermost layer of the conductive connecting piece 100, covering and isolating the first adhesive layer 20, so as to maintain the viscosity of the first adhesive layer 20 before adhesion and increase the durability of the conductive connecting piece 100 as a whole. Meanwhile, the isolation film 10 is a tearable film layer. When the conductive connecting piece 100 is electrically connected with the battery piece 200, the isolation film 10 needs to be torn to expose the first adhesive layer 20, and the conductive connecting piece 100 is adhered to the battery piece 200 through the first adhesive layer 20.

[0053] In a possible implementation, as shown in the drawings, Figure 8 As shown, the battery piece 200 includes a first edge 201 and a second edge 202 arranged along a second direction, and the linear groove 21 includes a first end 211 and a second end 212 arranged along the second direction, the distance D1 between the first end 211 and the first edge 201 is less than or equal to 3 mm, the distance D2 between the second end 212 and the second edge 202 is less than or equal to 3 mm, and the linear groove 21 continuously extends from the first end 211 to the second end 212.

[0054] In this way, the linear groove 21 continuously extends from the first end 211 to the second end 212, which can reduce the current transmission path of the electrode of the battery piece 200 to the conductive connecting piece 100, and the current can be more directly and continuously transmitted from the electrode of the battery piece 200 to the conductive connecting piece 100, thereby improving the current collection efficiency of the solar cell module 1001, so as to improve the power generation efficiency of the solar cell module 1001.

[0055] Meanwhile, the linear groove 21 continuously extends from the first end 211 to the second end 212, which can also increase the effective connection area of the conductive connecting piece 100 and the electrode of the battery piece 200, thereby improving the current collection capacity of the conductive connecting piece 100 to the electrode of the battery piece 200, so as to improve the power generation efficiency of the solar cell module 1001.

[0056] Specifically, for the connection mode of the conductive connecting piece 100 and the battery piece, the conductive layer 30 in one conductive connecting piece 100 is electrically connected with the electrode of one battery piece 200 through the conductive block 101, so that the conductive connecting piece 100 can converge the current generated by the electrode of the battery piece 200.

[0057] Further, the linear groove 21 in the conductive connecting piece 100 includes two ends arranged along the second direction. When one conductive connecting piece 100 is electrically connected with the electrode of one battery piece 200, the first end 211 of the linear groove 21 is an end close to the first edge 201 of the battery piece 200, and the second end 212 of the linear groove 21 is an end close to the second edge 202 of the battery piece 200.

[0058] It is worth noting that "the linear groove 21 extends continuously from the first end 211 to the second end 212" means that there is no interruption between the first end 211 and the second end 212 of the linear groove 21, and they are continuously arranged.

[0059] In one possible implementation, such as Figure 9 As shown, the solar cell module 1001 includes a plurality of cells 200, with two adjacent cells 200 being a first cell 210 and a second cell 220, respectively. The first cell 210 includes a third edge 2101, and the second cell 220 includes a fourth edge 2201. The third edge 2101 and the fourth edge 2201 are arranged along a second direction. The linear groove 21 includes a third end 213 and a fourth end 214 arranged along the second direction. The distance between the third end 213 and the third edge 2101 is less than or equal to 3 mm, and the distance between the fourth end 214 and the fourth edge 2201 is less than or equal to 3 mm. The linear groove 21 extends continuously from the third end 213 to the fourth end 214.

[0060] Thus, the linear groove 21 extends continuously from the third end 213 to the fourth end 214, which can reduce the current transmission path from the electrode of the cell 200 to the conductive connector 100. The current can be transmitted more directly and continuously from the electrode of the cell 200 to the conductive connector 100, thereby improving the current collection efficiency of the solar cell module 1001 and thus improving the power generation efficiency of the solar cell module 1001.

[0061] Meanwhile, the linear groove 21 extends continuously from the third end 213 to the fourth end 214, which can increase the effective connection area between the conductive connector 100 and the electrode of the cell 200, thereby improving the current collection capability of the conductive connector 100 to the electrode of the cell 200, and thus improving the power generation efficiency of the solar cell module 1001.

[0062] Specifically, regarding the connection method between the conductive connector 100 and the battery cell, one conductive connector 100 can also be conductively connected to the electrodes of two adjacent battery cells 200, so that the conductive layer 30 electrically connects the electrodes of the two adjacent battery cells 200 through the conductive block 101. The adjacent first battery cell 210 and second battery cell 220 can be connected in series or in parallel.

[0063] Furthermore, the linear groove 21 in the conductive connector 100 includes two ends arranged along the second direction, and is conductively connected to the electrodes of the adjacent first battery cell 210 and second battery cell 220 in the conductive connector 100. The third edge 2101 of the first battery cell 210 and the fourth edge 2201 of the second battery cell 220 are the two furthest edges of the first battery cell 210 and the second battery cell 220 in the second direction.

[0064] Further, the third end 213 of the linear groove 21 is an end close to the third edge 2101 of the first battery tab 210, and the fourth end 214 of the linear groove 21 is an end close to the fourth edge 2201 of the second battery tab 220. In this way, the linear groove 21 is arranged on both the first battery tab 210 and the second battery tab 220, and the linear groove 21 is continuously extended on the first battery tab 210 and the second battery tab 220.

[0065] It is worth noting that “the linear groove 21 is continuously extended from the third end 213 to the fourth end 214” means that the third end 213 and the fourth end 214 of the linear groove 21 are continuously arranged without interruption.

[0066] In a possible implementation, the isolation film 10 includes one or more of a polyester isolation film 10, a polyethylene isolation film 10, a polypropylene isolation film 10, a polyurethane isolation film 10, or a paper-based isolation film 10.

[0067] Further, as shown in Figure 3 and Figure 4 The first adhesive layer 20 includes a connecting part 22 with adhesion. The connecting part 22 specifically includes a tape or a film, to bond the battery tab 200. The film specifically can be an EVA film, a POE film, etc. The first adhesive layer 20 can bond two adjacent battery tabs 200 together, and accommodate the conductive block 101 by forming the linear groove 21. In this way, the first adhesive layer 20 can limit the setting position of the conductive block 101.

[0068] As shown in Figures 3 to 6 The linear groove 21 has a strip structure, and the setting position of the linear groove 21 corresponds to the position of the electrode of the battery tab 200. In this way, the conductive block 101 can be accurately and conductively connected to the electrode of the battery tab 200, so as to ensure that the current can smoothly pass between the battery tabs 200 to form a circuit.

[0069] It is worth noting that the electrode of the battery tab 200 refers to the main grid and / or the fine grid of the battery tab 200.

[0070] For example, the battery tab 200 specifically can be a battery tab 200 with a main grid, and at this time, the position of the linear groove 21 corresponds to the main grid of the battery tab 200, for example, the extension direction of the linear groove 21 is the same as the extension direction of the main grid.

[0071] For example, the battery tab 200 specifically can be a battery tab 200 without a main grid, and at this time, the position of the linear groove 21 corresponds to the fine grid of the battery tab 200, for example, the extension direction of the linear groove 21 is perpendicular or parallel to the extension direction of the fine grid.

[0072] As shown in Figure 5As shown, the conductive block 101 can be arranged in the linear groove 21 before the conductive connecting piece 100 is bonded with the battery piece 200, or can be arranged in the linear groove 21 by tearing the isolation film 10 when the conductive connecting piece 100 is bonded with the battery piece 200, which is not limited herein. Specifically, the conductive block 101 includes conductive glue and / or tin paste.

[0073] In a possible implementation, as shown in Figure 3 As shown, the isolation film 10 at least partially covers the linear groove 21. In this way, the isolation film 10 can reduce the contact between the linear groove 21 and air, thereby reducing the risk of oxidation and contamination.

[0074] It is worth noting that "the isolation film 10 at least partially covers the linear groove 21" means that the isolation film 10 can partially cover the linear groove 21, or the isolation film 10 can completely cover the linear groove 21.

[0075] Further, the isolation film 10 completely covers the entire first bonding layer 20. In this way, the isolation film 10 can isolate and protect the bonding part of the first bonding layer 20 with the battery piece 200, so as to maintain the adhesion of the first bonding layer 20. Meanwhile, the isolation film 10 can also isolate and protect the linear groove 21 in the first bonding layer 20, thereby reducing the risk of oxidation and contamination of the linear groove 21.

[0076] As shown in Figures 2 to 5 In a possible implementation, the conductive connecting piece 100 further includes a second bonding layer 40, which is arranged on the side of the conductive layer 30 away from the first bonding layer 20, and is used to connect the back plate 400 of the solar cell module 1001. In this way, the conductive connecting piece 100 can connect the back plate 400 of the solar cell module 1001 with the conductive connecting piece 100 through the second bonding layer 40, so that the conductive connecting piece 100 can be firmly combined with the back plate 400, thereby enhancing the mechanical strength of the solar cell module 1001. Meanwhile, the arrangement of the second bonding layer 40 can enable the conductive connecting piece 100 to be connected with the back plate 400 in a bonded manner, thereby improving the manufacturing efficiency of the solar cell module 1001.

[0077] Specifically, the second bonding layer 40 includes a first adhesive part 41 and a first bonding part 42 arranged in sequence, the first adhesive part 41 is arranged on the side of the conductive layer 30 away from the first bonding layer 20, and the first bonding part 42 is arranged on the side of the first adhesive part 41 away from the conductive layer 30.

[0078] The first adhesive portion 41 is located on the side of the conductive layer 30 opposite to the first adhesive layer 20 and is tightly bonded to the surface of the conductive layer 30. The first adhesive portion 41 includes at least one of EVA film or POE film. In this way, the conductive layer 30 and the second adhesive layer 40 can form a strong bond during lamination, preventing the connection from loosening due to mechanical stress or environmental changes.

[0079] The first adhesive portion 42 is located on the side of the first adhesive portion 41 opposite to the conductive layer 30, and is used to connect the second adhesive layer 40 to the backsheet 400 of the solar cell module 1001. The first adhesive portion 42 ensures stable adhesion between the backsheet 400 of the solar cell module 1001 and the conductive connector 100. The first adhesive portion 42 includes tape or adhesive, which is easy to install and allows for quick bonding of the conductive connector 100 to the backsheet 400.

[0080] Furthermore, in the second adhesive layer 40, the first adhesive portion 41 and the first bonding portion 42 handle different bonding tasks, allowing each component to focus on a different connection function, thereby improving the overall bonding strength of the second adhesive layer 40. Simultaneously, the layered structure of the first adhesive portion 41 and the first bonding portion 42 allows for the selection of the most suitable adhesive material from different components, meeting diverse bonding requirements.

[0081] like Figure 6 As shown, in one possible implementation, the solar cell 200 is a grid-connected solar cell 200, and the extension direction of the linear groove 21 is the same as the extension direction of the electrodes of the solar cell 200. In this way, the conductive block 101 can make more precise contact with the electrodes of the solar cell 200, reducing contact resistance in the electrical connection and thereby improving the overall conductivity efficiency of the solar cell module 1001.

[0082] For example, the solar cell 200 can specifically be a solar cell 200 with a main grid. In this case, the extension direction of the linear groove 21 is the same as the extension direction of the main grid of the solar cell 200, which is the second direction.

[0083] like Figure 7 As shown, in one possible implementation, the solar cell 200 is a gridless solar cell 200, and the extending direction of the linear groove 21 intersects the extending direction of the electrodes of the solar cell 200. In this way, the intersecting design of the linear groove 21 and the electrodes of the solar cell 200 helps to evenly distribute the mechanical stress between the solar cell 200 and the conductive connector 100, avoiding damage or deformation of the solar cell module 1001 due to stress concentration in one direction.

[0084] For example, the solar cell 200 can specifically be a gridless solar cell 200, in which case the extending direction of the linear groove 21 intersects the extending direction of the fine grid of the solar cell 200. Preferably, the extending direction of the linear groove 21 is perpendicular to the extending direction of the fine grid of the solar cell 200.

[0085] In one possible implementation, whether the main grid cell 200 or the non-main grid cell 200 is connected to the conductive connector 100, a conductive block 101 and an insulating block can be provided in the linear groove 21 at the same time to achieve conductive connection or insulation between the conductive layer 30 and the fine grid of two polarities in the cell 200.

[0086] Specifically, the linear groove 21 can simultaneously house both the conductive block 101 and the insulating block. For example, the positive electrode grid of the gridless solar cell 200 is electrically connected to the conductive layer 30 through the conductive block 101 in the linear groove 21, while the negative electrode grid of the gridless solar cell 200 is insulated from the conductive layer 30 through the insulating block in the linear groove 21. Alternatively, the negative electrode grid of the gridless solar cell 200 can be electrically connected to the conductive layer 30 through the conductive block 101 in the linear groove 21, while the positive electrode grid of the gridless solar cell 200 is insulated from the conductive layer 30 through the insulating block in the linear groove 21.

[0087] In one possible implementation, whether the main grid cell 200 or the non-main grid cell 200 is connected to the conductive connector 100, only the conductive block 101 can be provided in the linear groove 21, while an insulating block is provided on the electrode of one polarity, so as to achieve conductive connection or insulation between the conductive layer 30 and the electrodes of two polarities in the cell 200.

[0088] Specifically, the linear groove 21 may accommodate a conductive block 101 but not an insulating block. For example, an insulating block may be provided on the positive electrode grid of the gridless solar cell 200, and the negative electrode grid of the gridless solar cell 200 may be electrically connected to the conductive layer 30 through the conductive block 101 in the linear groove 21. At the same time, the positive electrode grid of the gridless solar cell 200 may be insulated from the conductive layer 30 through the insulating block. Alternatively, an insulating block may be provided on the negative electrode grid of the gridless solar cell 200, and the positive electrode grid of the gridless solar cell 200 may be electrically connected to the conductive layer 30 through the conductive block 101 in the linear groove 21. At the same time, the negative electrode grid of the gridless solar cell 200 may be insulated from the conductive layer 30 through the insulating block.

[0089] Furthermore, the insulating block can specifically be insulating adhesive.

[0090] In one possible implementation, such as Figure 5 As shown, the width of a single linear slot 21 ranges from 0.2 mm to 2 mm. For example, the width of a single linear slot 21 is 0.2 mm, 0.4 mm, 0.5 mm, 0.8 mm, 1 mm, 1.1 mm, 1.3 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm², or mm. In this way, the linear slot 21 can accommodate the conductive block 101 while avoiding excessive costs in forming the linear slot 21.

[0091] As shown in Figure 10 one possible implementation, the conductive layer 30 includes a substrate 31 and a circuit pattern 32 located on the surface of the substrate 31, the circuit pattern 32 being a metal foil pattern or an electromagnetic sputtering pattern. In this way, by forming the circuit pattern 32 on the surface of the substrate 31, the conductive layer 30 can provide a direct current path, thereby improving the current transmission efficiency of the current component.

[0092] Specifically, the substrate 31 can be a rigid material such as glass, ceramic, or a flexible material such as plastic, film, etc.

[0093] Specifically, the circuit pattern 32 can form a metal foil pattern on the substrate 31 by metal foil printing. The metal foil, such as copper, silver, etc., has very high electrical conductivity, so the circuit pattern 32 formed by metal foil printing can improve the electrical performance of the conductive layer 30. At the same time, the strength of the metal foil is generally high, which can provide better mechanical stability and tensile strength for the conductive layer 30.

[0094] Specifically, the circuit pattern 32 can form an electromagnetic sputtering pattern on the substrate 31 by electromagnetic sputtering spraying. The electromagnetic sputtering process can deposit a very thin and uniform circuit pattern 32 on the surface of the substrate 31, which can improve the manufacturing precision of the circuit pattern 32. At the same time, the circuit pattern 32 sprayed by electromagnetic sputtering can be firmly attached to the surface of the substrate 31 to improve the durability and mechanical stability of the circuit pattern 32.

[0095] In one possible implementation, in the solar cell module 1001, the cell sheet 200 is laid on the conductive connector 100. The electrode of the cell sheet 200 is specifically towards the conductive connector 100. In this way, when the electrode of the cell sheet 200 is towards the conductive connector 100, the electrical contact between the electrode and the conductive connector 100 can be ensured.

[0096] As shown in Figure 2 , the solar cell module 1001 further includes a front plate 300 and a back plate 400, the front plate 300 is arranged on the side of the cell sheet 200 away from the conductive connector 100, and the front plate 300 and the cell sheet 200 are connected by a third adhesive layer 500, the third adhesive layer 500 includes adhesive tape or adhesive film to bond the front plate 300. Specifically, the adhesive film can be EVA adhesive film, POE adhesive film, etc.

[0097] The back plate 400 is arranged on the side of the conductive connector 100 away from the cell sheet 200, and the conductive connector 100 and the back plate 400 are connected by a second adhesive layer 40 to bond the back plate 400.

[0098] In the description of the specification, reference to "some embodiments", "certain embodiments", "exemplary embodiments", "specific embodiments", or "some examples" etc., mean that the particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0099] Moreover, the above-description of the present application is by way of example, not of limitation, and proper modifications, equivalent substitutions and improvements are intended to be included within the scope of the application.

Claims

1. An electrically conductive connector for a solar cell module, characterized by, The application relates to a conductive connecting piece for a solar cell module. The conductive connecting piece comprises a first adhesive layer and a conductive layer which are sequentially arranged in layers. The first adhesive layer is used for bonding a battery piece. The first adhesive layer forms a plurality of linear grooves which are arranged along a first direction and extend along a second direction, the first direction intersects the second direction, the positions of the linear grooves correspond to electrodes of the battery piece. The linear grooves are used for accommodating conductive blocks, and the conductive layer is electrically connected to the electrodes of the battery piece through the conductive blocks.

2. The electrically conductive connection of claim 1, wherein, The battery piece comprises a first edge and a second edge which are arranged along the second direction, the linear grooves comprise a first end and a second end which are arranged along the second direction, the distance between the first end and the first edge is less than or equal to 3 mm, the distance between the second end and the second edge is less than or equal to 3 mm, and the linear grooves continuously extend from the first end to the second end.

3. The electrically conductive connection of claim 1, wherein, The solar cell module comprises a plurality of the battery pieces, and two adjacent battery pieces are respectively a first battery piece and a second battery piece. The first battery piece comprises a third edge, and the second battery piece comprises a fourth edge, the third edge and the fourth edge are arranged along the second direction. The linear grooves comprise a third end and a fourth end which are arranged along the second direction, the distance between the third end and the third edge is less than or equal to 3 mm, the distance between the fourth end and the fourth edge is less than or equal to 3 mm, and the linear grooves continuously extend from the third end to the fourth end.

4. The electrically conductive connector of claim 1, wherein, The conductive connecting piece further comprises a second adhesive layer which is arranged on the side of the conductive layer away from the first adhesive layer and is used for connecting a back plate of the solar cell module.

5. The electrically conductive connection of claim 4, wherein, The second adhesive layer comprises a first adhesive part and a first bonding part which are sequentially arranged in layers, the first adhesive part is arranged on the side of the conductive layer away from the first adhesive layer, and the first bonding part is arranged on the side of the first adhesive part away from the conductive layer.

6. The electrically conductive connector of claim 1, wherein, The battery piece is a main-grid battery piece, and the extension direction of the linear grooves is the same as the extension direction of the main grid of the battery piece.

7. The electrically conductive connector of claim 1, wherein, The battery piece is a non-main-grid battery piece, and the extension direction of the linear grooves intersects the extension direction of the fine grid of the battery piece.

8. The electrically conductive connector of claim 1, wherein, The width of a single linear groove ranges from 0.2 mm to 2 mm.

9. The electrically conductive connector of claim 1, wherein, The conductive layer comprises a substrate and a circuit pattern on the surface of the substrate, the circuit pattern is a metal foil pattern or an electromagnetic sputtering pattern.

10. The electrically conductive connector of claim 1, wherein, The conductive connecting piece further comprises an isolation film which covers the first adhesive layer.

11. The electrically conductive connection of claim 10, wherein, The isolation film at least partially covers the linear grooves.

12. A solar cell module characterized by comprising: The application relates to a solar cell module. The solar cell module comprises a plurality of battery pieces and a conductive connecting piece as claimed in any one of claims 1 to 9, the battery pieces are sequentially arranged in layers on the conductive connecting piece, the conductive blocks are arranged in the linear grooves of the conductive connecting piece, and the conductive blocks are used for electrically connecting the electrodes of the battery pieces.

13. A photovoltaic system characterized by, The application relates to a solar cell module. The solar cell module comprises a plurality of battery pieces and a conductive connecting piece as claimed in any one of claims 1 to 9, the battery pieces are sequentially arranged in layers on the conductive connecting piece, the conductive blocks are arranged in the linear grooves of the conductive connecting piece, and the conductive blocks are used for electrically connecting the electrodes of the battery pieces. The application relates to a solar cell module. The solar cell module comprises a plurality of battery pieces and a conductive connecting piece as claimed in any one of claims 1 to 9, the battery pieces are sequentially arranged in layers on the conductive connecting piece, the conductive blocks are arranged in the linear grooves of the conductive connecting piece, and the conductive blocks are used for electrically connecting the electrodes of the battery pieces.

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