Electrical connector and photovoltaic module

Abstract

The present application discloses an electrical connector and a photovoltaic module, including a main body, wherein the main body is provided with a plurality of slotted structures arranged at intervals along a first direction, and the portion of the main body corresponding to at least one of the slotted structures is in a curved structure. When the electrical connector is used for mid-span electrical connection in a photovoltaic module, during the lamination process, the plurality of slotted structures provided in the main body facilitate the free flow of materials around the electrical connector, thereby reducing the influence of material flow on the electrical connector, and reducing the problem of displacement or distortion of the electrical connector. At the same time, the portion of the main body corresponding to at least one slotted structure is provided with a curved structure, and the deformation of the curved structure during use can adapt to the length change requirements of the electrical connector, thereby reducing the problem of upper and lower bulges caused by uneven local deformation of the electrical connector, which helps to improve the process quality of the photovoltaic module.

Description

Technical Field

[0001] The present application belongs to the field of photovoltaic technology, and specifically relates to an electrical connector and a photovoltaic module. Background Art

[0002] With the development of photovoltaic technology, the demand for large-size photovoltaic modules is increasing. In large-size photovoltaic modules, for structural design or to reduce the temperature of hot spots, cross-distance connections are usually required to connect the bus bars at both ends of the battery string to form an electrical circuit.

[0003] In the related art, longer bus bars are usually used as jumper bus bars to connect the battery strings across distances to form a battery layer; then the front panel, film layer, battery layer, film layer and back panel are stacked and laminated in sequence to prepare a large-sized photovoltaic module.

[0004] However, during the lamination process, as the film layer material flows and the temperature changes, the jumper busbars will experience problems such as deviation, distortion, and up and down bulges. When the busbars are fixedly connected, the stress at both ends is relatively large, which in turn causes defects such as local bulges and delamination in the photovoltaic modules. Utility Model Content

[0005] The present application aims to provide an electrical connector and a photovoltaic module, which can partially or completely solve the problems of the jumper busbars in the related technology being easily deflected, twisted, and raised up and down during the lamination process of the photovoltaic module.

[0006] In order to solve the above technical problems, this application is implemented as follows:

[0007] In a first aspect, an embodiment of the present application proposes an electrical connector, comprising: a body, wherein the body is provided with a plurality of slot structures arranged at intervals along a first direction, and the body is in a bent structure at a portion corresponding to at least one of the slot structures.

[0008] Optionally, the portion corresponding to the slotted structure in the main body is set as a fork unit, and the fork unit includes a first connecting portion and a second connecting portion arranged on both sides of the slotted structure along a second direction, and the first connecting portion and the second connecting portion in at least one of the fork units are bent toward a third direction, the second direction intersects with the first direction, and the third direction is perpendicular to the first direction and the second direction, respectively.

[0009] Optionally, the bending directions of the first connection portion and the second connection portion in at least one of the bifurcated units are opposite.

[0010] Optionally, a plurality of the bifurcated units are provided in the main body, and the first connecting portion and the second connecting portion in each of the bifurcated units are bent toward the third direction.

[0011] Optionally, the bending directions of the first connecting portion and the second connecting portion in each of the bifurcated units are opposite.

[0012] Optionally, the bending directions of the first connection portions in two adjacent bifurcated units are opposite; or, the bending directions of the first connection portions in two adjacent bifurcated units are the same.

[0013] Optionally, along the first direction, the length of the slotted structure is L1, satisfying: 5mm≤L1≤50mm;

[0014] and / or, along the first direction, the distance between two adjacent slotted structures is L2, satisfying: 3mm≤L2≤50mm;

[0015] And / or, along the second direction, the width of the slotted structure is M, satisfying: 0 mm <M≤5mm。

[0016] Optionally, along the third direction, the total thickness of the main body is H0, satisfying: 0.1mm≤H0≤1mm; and / or, along the third direction, the maximum height of the curved structure away from the main body is H, satisfying: 10um≤H≤500um.

[0017] Optionally, the electrical connector is used for electrical connection across distances in a photovoltaic module; and / or the body is made of a conductive material.

[0018] Optionally, the body includes: a first conductive layer and a first connecting layer which are stacked, and the first connecting layer is arranged on at least one side of the first conductive layer.

[0019] Optionally, the first connection layer includes one of a welding material layer or a conductive adhesive layer.

[0020] Optionally, along the stacking direction of the first conductive layer and the first connecting layer, the thickness of the first conductive layer is H1, satisfying: 100um≤H1≤900um;

[0021] And / or, the thickness of the first connection layer is H2, satisfying: 10um≤H2≤30um.

[0022] In the second aspect, an embodiment of the present application proposes a photovoltaic module, comprising: a battery string and an electrical connector, wherein the electrical connector is used for cross-distance electrical connection in the photovoltaic module; the electrical connector comprises a main body, wherein the main body is provided with a plurality of slot structures arranged at intervals along a first direction, and the main body extends along the first direction and is at least partially planar; a bus bar is provided at least at one end of the battery string, and the main body is connected to the bus bar.

[0023] In a third aspect, an embodiment of the present application proposes a photovoltaic module, comprising: a battery string, and an electrical connector as described in any one of the above items; a bus bar is provided at at least one end of the battery string, and the body is connected to the bus bar.

[0024] Optionally, the photovoltaic assembly further includes: a conductive tape; the conductive tape includes a first end and a second end opposite to each other, the first end is connected to the body, and the second end is connected to the bus bar.

[0025] Optionally, the conductive tape further includes a transition portion provided between the first end and the second end, and the transition portion is in a curved structure.

[0026] Optionally, the conductive tape comprises a flexible base layer, a second conductive layer and a second connection layer which are stacked in sequence, and the second connection layer is connected to the body and / or the bus bar.

[0027] Optionally, along the direction from the flexible base layer to the second connection layer; the thickness of the flexible base layer is H3, satisfying: 20um≤H3≤200um;

[0028] And / or, the thickness of the second conductive layer is H4, satisfying: 100um≤H4≤400um;

[0029] And / or, the thickness of the second connection layer is H5, satisfying: 1um≤H5≤20um.

[0030] Optionally, the photovoltaic module further includes: a conductive adhesive layer, wherein the conductive adhesive layer is provided between the body and the bus bar, and the body is connected to the bus bar via the conductive adhesive layer.

[0031] Optionally, in a direction from the body to the bus bar, the body and the bus bar at least partially overlap, the orthographic projection area of ​​the conductive adhesive layer is S1, and the orthographic projection area of ​​the overlapping portion of the body and the bus bar is S2, satisfying: S1≤S2.

[0032] Optionally, in a direction from the body to the bus bar, the thickness of the conductive adhesive layer is H6, satisfying: 10um≤H6≤100um.

[0033] Optionally, the electrical connector is provided as one, and the electrical connector connects the bus bar at one end of one battery string with the bus bar at the other end of another battery string; or, the electrical connector is provided as multiple, and multiple electrical connectors are connected; the multiple electrical connectors connect the bus bar at one end of one battery string with the bus bar at the other end of another battery string.

[0034] Optionally, the curved structure on the body is formed into a structure extending along the first direction and at least partially in a plane in the first direction after lamination of the photovoltaic components.

[0035] In the present application, by providing a plurality of slotted structures arranged at intervals in the body of the electrical connector, when the electrical connector is used for mid-span electrical connection in a photovoltaic module, during the lamination process, the plurality of slotted structures provided in the body facilitate the free flow of materials around the electrical connector, thereby reducing the influence of material flow on the electrical connector, and reducing the problem of displacement or distortion of the electrical connector. At the same time, the body is provided with a curved structure at a portion corresponding to at least one slotted structure, and the deformation of the curved structure during use can adapt to the length change requirements of the electrical connector, thereby reducing the problem of upper and lower bulges caused by uneven local deformation of the electrical connector, thereby helping to improve the process quality of the photovoltaic module.

[0036] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0038] Figure 1 is a schematic diagram of an electrical connector according to an embodiment of the present application;

[0039] Figure 2 It is one of the three-dimensional schematic diagrams of the electrical connector of the embodiment of the present application;

[0040] Figure 3 This is the second three-dimensional schematic diagram of the electrical connector of the embodiment of the present application;

[0041] Figure 4 The first electrical connector of the present application embodiment is Figure 2 Schematic diagram of the projection of the middle AA line;

[0042] Figure 5 The second electrical connector of the embodiment of the present application is Figure 2 Schematic diagram of the projection of the middle AA line;

[0043] Figure 6 The third electrical connector of the present application embodiment is Figure 2 Schematic diagram of the projection of the middle AA line;

[0044] Figure 7 The fourth electrical connector of the present application is Figure 2 Schematic diagram of the projection of the middle AA line;

[0045] Figure 8 The fifth electrical connector of the present application is Figure 2 Schematic diagram of the projection of the middle AA line;

[0046] Fig. 9 is a partial structural schematic diagram of an electrical connector according to an embodiment of the present application;

[0047] Fig.10 is a cross-sectional view of the body of the electrical connector of the embodiment of the present application;

[0048] Fig.11 is a schematic diagram of a photovoltaic module according to an embodiment of the present application;

[0049] Fig.12 This is an embodiment of the present application Fig.11 An enlarged view of the circled section B;

[0050] Fig.13 This is an embodiment of the present application Fig.11 The enlarged view of the C section circled in the middle;

[0051] Fig.14 The corresponding embodiment of the present application Fig.13 A three-dimensional schematic diagram of

[0052] Fig.15 This is a schematic diagram of a connection between an electrical connector and a bus bar in an embodiment of the present application;

[0053] Fig.16 is a cross-sectional view of a conductive tape according to an embodiment of the present application;

[0054] Fig.17 This is another connection diagram between the electrical connector and the busbar in the embodiment of the present application.

[0055] Reference numerals:

[0056] 100: electrical connector; 110: body; 111: first conductive layer; 112: first connection layer; 120: bifurcated unit; 120a: slotted structure; 121: first connection portion; 122: second connection portion; 200: battery string; 210: bus bar; 300: conductive tape; 310: first end; 320: second end; 330: transition portion; 301: flexible substrate layer; 302: second conductive layer; 303: second connection layer; 400: conductive adhesive layer; X: first direction; Y: second direction; Z: third direction. DETAILED DESCRIPTION

[0057] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0058] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0059] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0060] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0061] The electrical connector and photovoltaic module provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0062] like Figures 1 to 3 As shown, according to some embodiments of the present application, the electrical connector 100 is used for cross-distance electrical connection in a photovoltaic module, and includes a main body 110, in which a plurality of slotted structures 120a arranged at intervals along a first direction X are provided, and the main body 110 has a curved structure at a portion corresponding to at least one slotted structure 120.

[0063] In the embodiment of the present application, by providing a plurality of slotted structures 120a arranged at intervals in the body 110 of the electrical connector 100, when the electrical connector 100 is used for mid-span electrical connection in a photovoltaic module, during the lamination process, the plurality of slotted structures 120a provided in the body 110 facilitate the free flow of materials around the electrical connector 100, thereby reducing the influence of material flow on the electrical connector 100, and reducing the problem of displacement or distortion of the electrical connector 100. At the same time, the body 110 is provided with a curved structure at a portion corresponding to at least one slotted structure 120, and the deformation of the curved structure can adapt to the length change requirement of the electrical connector 100 during use, thereby reducing the problem of up and down bulges caused by uneven local deformation of the electrical connector 100, thereby helping to improve the process quality of the photovoltaic module.

[0064] It is understandable that if Fig.11 As shown, the photovoltaic module may include multiple battery strings, and both ends of the battery strings are respectively connected to bus bars. The bus bar 210 at one end of a battery string 200 can be connected to the bus bar 210 at the other end of another battery string 200 through the electrical connector 100, or the bus bars 210 at both ends of the same battery string 200 can be connected using the electrical connector 100.

[0065] In the photovoltaic module manufacturing process, a bus bar 210 can be used to connect multiple battery strings 200 to form a battery string group, and then the bus bars 210 at both ends can be connected across a distance using an electrical connector 100 according to design requirements. This means that the electrical connector 100 can at least be understood as a bypass bus bar or a cross-connect bus bar in certain circumstances; then, the photovoltaic module is manufactured through lamination and other processes. During the lamination process, the adhesive film material will flow to a certain extent. By setting a plurality of slotted structures 120a in the electrical connector 100, the adhesive film material can flow on both sides of the electrical connector 100 through the slotted structures 120a, thereby promoting the free flow of the adhesive film material around the electrical connector 100, which can reduce the stress of the material flow on the electrical connector 100, thereby reducing the problem of positional displacement or distortion of the electrical connector 100.

[0066] At the same time, during the lamination process, as the temperature changes, the total length of the electrical connector 100 will change. In the electrical connector 100 in the embodiment of the present application, the portion of the main body 110 corresponding to at least one slotted structure 120 is bent, so that the length of the main body 110 can be adjusted by deformation of the bent structure, thereby reducing the upper and lower bulge problem caused by uneven local deformation of the electrical connector 100; and it can also reduce the stress when the end of the electrical connector 100 is fixedly connected to the bus bar 100.

[0067] In some embodiments, Figure 1 As shown, the body 110 of the electrical connector 100 may be an integral structural member, and laser cutting or mechanical scribing may be used to perform interval slotting in the body 110 along the first direction X to form a slotted structure 120a. The slotting process may divide the corresponding body 110 into two parts disposed on both sides of the slotted structure 120a, and then the two divided parts of the body 110 may be bent to form a corresponding bent structure.

[0068] It should be noted that, in some other embodiments, the curved structure on the body includes a curved structure formed at a portion of the body 110 corresponding to at least one slot structure 120 or a curved structure formed at a portion of the body 110 other than the slot structure 120 .

[0069] Among them, the shape of the curved structure in the main body 100 can be a curved shape structure with a curved arc or angle, such as a circular arc, an elliptical arc, a triangle, a trapezoid, a rectangle, a polygon, etc., or it can be other irregular structural shapes. It can be flexibly set according to actual needs, and the embodiment of the present application is not limited to this.

[0070] It can be understood that in the present application, a curved structure can be formed in the portion of the main body 100 corresponding to the partial groove structure 120, wherein the portions of the main body 110 on both sides of the same groove structure 120 can be bent in the same direction or in different directions, and the embodiments of the present application are not limited to this.

[0071] Alternatively, if Figures 2 to 8 As shown, the portion corresponding to the slot structure 120a in the main body 110 is set as a fork unit 120, and the fork unit 120 includes a first connection portion 121 and a second connection portion 122 arranged on both sides of the slot structure 120a along the second direction Y. The first connection portion 121 and the second connection portion 122 in at least one fork unit 120 are bent toward a third direction Z, the second direction Y intersects with the first direction X, and the third direction Z is perpendicular to the first direction X and the second direction Y, respectively.

[0072] In an embodiment of the present application, the electrical connector 100 is used in a process of laminating to form a photovoltaic module. A film layer is arranged on both sides of the electrical connector 100 along a third direction Z. During the lamination process, the electrical connector 100 is subjected to stress generated by material flow. By setting the first connection part 121 and the second connection part 122 in at least one forked unit 120 to bend toward the third direction Z, the stress on the electrical connector 100 can be at least partially adjusted through the deformation of the first connection part 121 and the second connection part 122 during the lamination process, thereby reducing the occurrence of problems such as offset and distortion of the electrical connector 100.

[0073] At the same time, through the deformation of the first connecting part 121 and the second connecting part 122, the length of the electrical connector 100 can also be adjusted to adapt to the length change of the electrical connector 100 caused by temperature change, thereby avoiding the problem of bulging or stratification of the photovoltaic module caused by uneven local deformation of the electrical connector 100.

[0074] Alternatively, if Figures 4 to 8 As shown, the bending directions of the first connection portion 121 and the second connection portion 122 in at least one bifurcated unit 120 are opposite.

[0075] In an embodiment of the present application, by setting the bending directions of the first connection part 121 and the second connection part 122 in at least one fork unit 120 to be opposite, so that the first connection part 121 and the second connection part 122 with opposite bending directions can be deformed in the opposite direction during the lamination process to adjust or reduce the torsional stress, it helps to further reduce the risk of displacement or distortion of the electrical connector 100.

[0076] The opposite bending directions refer to that the first connection portion 121 and the second connection portion 122 in the same fork unit 120 are bent along the third direction Z toward different sides of the body 110 .

[0077] In a specific application, the photovoltaic module may include a length direction, a width direction and a thickness direction, the size of the photovoltaic module along the length direction is greater than the size along the width direction, and the size of the photovoltaic module along the width direction is greater than the size along the thickness direction. Furthermore, the first direction X may be set to be parallel to the length direction of the photovoltaic module, the second direction Y may be set to be parallel to the width direction of the photovoltaic module, and the third direction Z may be set to be parallel to the thickness direction of the photovoltaic module.

[0078] It can be understood that in the electrical connector 100 of the embodiment of the present application, under the premise of ensuring that the bending directions of the first connection part 121 and the second connection part 122 in at least one fork unit 120 are opposite, the bending structure of the first connection part 121 and the second connection part 122 in the remaining fork units 120 can be freely set, and the embodiment of the present application does not limit this.

[0079] Alternatively, if Figures 2 to 8 As shown, a plurality of bifurcated units 120 are disposed in the main body 110 , and the first connecting portion 121 and the second connecting portion 122 in each bifurcated unit 120 are bent toward the third direction Z.

[0080] In the embodiment of the present application, by setting the first connection part 121 and the second connection part 122 in each fork unit 120 to bend toward the third direction Z, different positions in the main body 110 can have a certain deformation ability, so that the stress on the corresponding parts can be adjusted or reduced by deformation of different parts of the main body 110, which can ensure the stability of the overall performance of the electrical connector 100 to a certain extent.

[0081] In specific applications, such as Figures 4 to 6 As shown, in several bifurcated units 120, the first connection portion 121 and the second connection portion 122 in each bifurcated unit 120 are bent toward the third direction Z, and the bending directions of the first connection portion 121 and the second connection portion 122 in at least one bifurcated unit 120 are opposite. The bending directions of the first connection portion 121 and the second connection portion 122 in the remaining bifurcated units 120 can be set to be the same or different, and can be flexibly set in actual use, and this application does not impose any limitation on this.

[0082] It is understandable that in actual applications, when the electrical connector 100 is arranged at different positions in the photovoltaic module, it is subjected to different stresses. Therefore, the bending directions of the first connecting portion 121 and the second connecting portion 122 in each forked unit 120 in the electrical connector 100 can be flexibly set according to the distribution position of the electrical connector 100 in the photovoltaic module to meet different application requirements.

[0083] Alternatively, if Figure 7 and Figure 8 As shown, the bending directions of the first connection portion 121 and the second connection portion 122 in each bifurcated unit 120 are opposite.

[0084] In the embodiment of the present application, by setting the bending directions of the first connection part 121 and the second connection part 122 in each fork unit 120 to be opposite, when the electrical connector 100 as a whole is subjected to torsional stress, the reverse deformation of the first connection part 121 and the second connection part 122 in different fork units 120 can be used to adjust or reduce the torsional stress on the corresponding parts, thereby further reducing the risk of the electrical connector 100 as a whole being offset or twisted. At the same time, through the deformation of each first connection part 121 and the second connection part 122, the length change of the electrical connector 100 can be better adapted, so that the electrical connector 100 maintains stable performance.

[0085] Alternatively, if Figure 7 As shown, the bending directions of the first connection portion 121 and the second connection portion 122 in each bifurcated unit 120 are opposite, and the bending directions of the first connection portion 121 in two adjacent bifurcated units 120 are opposite; accordingly, the bending directions of the second connection portions 122 in two adjacent bifurcated units 120 are also opposite.

[0086] In the embodiment of the present application, the bending structures of all the first connection parts 121 and all the second connection parts 122 are arranged to change alternately, and the bending directions of the first connection parts 121 and the second connection parts 122 in two adjacent forked units 120 are opposite. In this way, the two adjacent forked units 120 can cooperate with each other, so as to better adjust or reduce the torsional stress of the electrical connector 100, and improve the use stability of the electrical connector 100.

[0087] Alternatively, if Figure 8 As shown, the bending directions of the first connection portion 121 and the second connection portion 122 in each fork unit 120 are opposite, and the bending directions of the first connection portion 121 in two adjacent fork units 120 are the same; accordingly, the bending directions of the second connection portions 122 in two adjacent fork units 120 are also the same.

[0088] In the embodiment of the present application, all the first connection parts 121 are bent toward one side of the body 110, and all the second connection parts 122 are bent toward the other side of the body 110, so that the overall structure of the body 110 is more regular, which is convenient for actual processing and manufacturing. At the same time, during use, the bending changes of the first connection parts 121 and the second connection parts 122 can avoid problems such as uneven deformation, offset or distortion of the electrical connector 100 to a certain extent.

[0089] Alternatively, if Figure 1 As shown, along the first direction X, the length of the slot structure 120a is L1, which satisfies: 5mm≤L1≤50mm.

[0090] Exemplarily, the length L1 of the slotted structure 120a can be set to any value such as 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 40 mm, 50 mm, or a range between any two values.

[0091] In the embodiment of the present application, by setting the value range of the length L1 of the slotted structure 120a along the first direction X, when the electrical connector 100 is used for lamination to form a photovoltaic module, the slotted structure 120a can be used to promote the free flow of materials around the electrical connector 100, reduce the impact of material flow on the electrical connector 100, and thus reduce the problem of offset or distortion of the electrical connector 100. At the same time, it is prevented that the length of the slotted structure 120a is too long to affect the overall strength of the body 110.

[0092] like Figure 1As shown, the length L1 of the slot structure 120a refers to the straight-line distance between the two ends of the slot structure 120a in the body 110 along the first direction X, which can be measured by a caliper or other dimension measuring tool. The specific value of the length L1 of the slot structure 120a can be flexibly set according to actual needs, and this application does not limit this.

[0093] In some embodiments, the lengths of the first connection portion 121 and the second connection portion 122 located on both sides of the same slot structure 120a can be set to be the same or different, and can be flexibly set according to actual needs, which is not limited in the embodiments of the present application.

[0094] Alternatively, if Figure 1 As shown, along the first direction X, the distance between two adjacent slot structures 120a is L2, which satisfies: 3mm≤L2≤50mm.

[0095] Exemplarily, the spacing L2 between two adjacent slotted structures 120a can be set to any value such as 3 mm, 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 40 mm, 50 mm, or a range between any two values.

[0096] It is understandable that if the spacing between two adjacent slotted structures 120a is too small, the slotted structures 120a arranged in the main body 110 are too dense, which will reduce the overall connection strength of the electrical connector 100; while if the spacing between two adjacent slotted structures 120a is too large, it will not be able to effectively reduce the stress on the electrical connector 100.

[0097] Therefore, in the embodiment of the present application, Figure 1 As shown, L2 refers to the distance between two adjacent slotted structures 120a along the first direction X. By setting a reasonable value range of the distance L2 between two adjacent slotted structures 120a along the first direction X, the flow of materials around the electrical connector 100 during the lamination process can be promoted through different slotted structures 120a, the influence of the flow of materials on the electrical connector 100 can be reduced, and the connection stability of the electrical connector 100 can be improved.

[0098] Alternatively, if Figure 1 As shown, along the second direction Y, the width of the slot structure 120a is M, which satisfies: 0 mm <M≤5mm。

[0099] Exemplarily, the width M of the slot structure 120a can be set to any value such as 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, or a range between any two values.

[0100] In the embodiment of the present application, by setting a value range of the width M of the slotted structure 120a along the second direction Y, the flow of the material at the slotted structure 120a during the lamination process can be promoted, while at the same time the slotted structure 120a can be prevented from being too wide to affect the structural size setting of the main body 110.

[0101] It can also be understood that when the first connection part 121 and the second connection part 122 on both sides of the slot structure 120a are in a curved structure, the width M of the slot structure 120a can also refer to the minimum gap size between the first connection part 121 and the second connection part 122 corresponding to the second direction Y.

[0102] Alternatively, if Fig.10 As shown, along the third direction Z, the total thickness of the body 110 is H0, which satisfies: 0.1mm≤H0≤1mm. In the embodiment of the present application, the value range of the total thickness H0 of the body 110 is set to ensure good mechanical strength and conductive performance of the electrical connector 100 as a whole.

[0103] Exemplarily, the total thickness H0 of the body 110 can be set to any value such as 0.1 mm, 0.2 mm, 0.5 mm, 0.7 mm, 0.8 mm, 1 mm, or a range between any two values.

[0104] Alternatively, if Fig. 9 As shown, along the third direction Z, the maximum height of the curved structure away from the body 110 is H, which satisfies: 10um≤H≤500um. In the embodiment of the present application, the value range of the maximum height H of the curved structure is set to prevent excessive bending from causing uneven local deformation of the electrical connector 100 and causing bulging or delamination of the photovoltaic module.

[0105] Exemplarily, the maximum height H of the curved structure away from the main body 110 can be set to any value such as 10um, 100um, 200mm, 300mm, 400mm, 500mm, or a range between any two values.

[0106] Optionally, the body 110 is made of a conductive material. In the embodiment of the present application, the body 110 of the electrical connector 100 is made of a conductive material so that the body 110 can be directly connected to the busbar 210 by welding or other methods when in use, thereby facilitating the processing and use of the electrical connector 100 and reducing the production cost.

[0107] The body 110 can be made of a metal conductive material, for example, pure copper, brass, aluminum alloy and other conductive metal materials. When in use, the electrical connector 100 can be directly welded and fixed to the bus bar 210 in the photovoltaic module by laser welding or other methods to achieve cross-distance electrical connection. Of course, the body 110 of the electrical connector 100 can also be made of other materials, which is not limited in the present embodiment.

[0108] Alternatively, if Fig.10 As shown, the body 110 includes a first conductive layer 111 and a first connection layer 112 which are stacked, and the first connection layer 112 is disposed on at least one side of the first conductive layer 111 .

[0109] The first conductive layer 111 and the first connection layer 112 may be stacked along the third direction Z, and the first connection layer 112 is disposed on at least one side of the first conductive layer 111 along the third direction Z.

[0110] In the embodiment of the present application, the first conductive layer 111 is provided to perform a conductive function, and the first connecting layer 112 is provided on at least one side of the first conductive layer 111, so that the first connecting layer 112 can be used to achieve a connection function. For example, in a photovoltaic module, the first connecting layer 112 can be connected to the bus bar 210 at the end of the battery string 200 to achieve a cross-distance connection between different battery strings 200. Of course, the first connecting layer 112 can also be used to connect to other components in the photovoltaic module.

[0111] Optionally, the first connection layer 112 includes one of a solder material layer or a conductive adhesive layer.

[0112] The first connection layer 112 is formed by a welding material layer, and the electrical connector 100 and the bus bar 210 can be connected and fixed by welding when in use, and the conductivity between the electrical connector 100 and the bus bar 210 can also be ensured. Exemplarily, the welding material layer can be made of a material that assists welding, such as a tin layer or a tin-lead alloy layer.

[0113] The first connection layer 112 is formed by a conductive adhesive layer, and the bonding effect of the conductive adhesive layer can be used to achieve bonding and fixing of the electrical connector 100 and the bus bar 210, while ensuring the conductivity between the electrical connector 100 and the bus bar 210. For example, the conductive adhesive layer can be made of conductive glue.

[0114] Of course, the first connection layer 112 can also be made of other materials that can achieve conductive connection. Those skilled in the art can flexibly select them according to actual needs, and the embodiments of the present application are not limited to this.

[0115] Alternatively, if Fig.10As shown, along the stacking direction of the first conductive layer 111 and the first connecting layer 112 (i.e., along the third direction Z), the thickness of the first conductive layer 111 is H1, which satisfies: 100um≤H1≤900um. By setting the value range of the thickness H1 of the first conductive layer 111, the conductivity and mechanical strength of the electrical connector 100 are ensured.

[0116] Exemplarily, the thickness H1 of the first conductive layer 111 can be set to any value such as 100um, 130um, 150um, 180um, 200um, 250um, 300um, 400um, 500um, 600um, 700um, 800um, 900um, or a range between any two values.

[0117] Alternatively, if Fig.10 As shown, along the stacking direction of the first conductive layer 111 and the first connecting layer 112 (i.e., along the third direction Z), the thickness of the first connecting layer 112 is H2, which satisfies: 10um≤H2≤30um. By setting the value range of the thickness H2 of the first connecting layer 112, the connection performance of the electrical connector 100 is guaranteed, and the connection and fixation of the electrical connector 100 with other components is facilitated.

[0118] Exemplarily, the thickness H2 of the first connection layer 112 can be set to any value such as 10um, 12um, 15um, 17um, 20um, 25um, 30um, or a range between any two values.

[0119] Alternatively, if Fig.11 As shown, an embodiment of the present application further provides a photovoltaic assembly, including a battery string 200 and an electrical connector 100, the electrical connector 100 includes a main body 110, the main body 110 is provided with a plurality of slotted structures 120a arranged at intervals along a first direction X, the main body 110 extends along the first direction X and is at least partially planar; a bus bar 210 is provided at least at one end of the battery string 200, and the main body 110 is connected to the bus bar 210.

[0120] It should be noted that the photovoltaic assembly in the present application may include the electrical connector 100 in any of the above embodiments. The specific structure of the electrical connector 100 can be found in the above content, and the embodiments of the present application will not be repeated here.

[0121] In the embodiment of the present application, by providing a plurality of slotted structures 120a arranged at intervals in the body 110 of the electrical connector 100, when the electrical connector 100 is used for mid-span electrical connection in a photovoltaic module, during the lamination process, the plurality of slotted structures 120a provided in the body 110 facilitate the free flow of materials around the electrical connector 100, thereby reducing the influence of material flow on the electrical connector 100, and reducing the problem of offset or distortion of the electrical connector 100. At the same time, by providing a structure in which the body 110 of the electrical connector 100 extends along the first direction X and is at least partially planar, the interference between the electrical connector 100 and other components in the photovoltaic module helps to improve the quality of the photovoltaic module.

[0122] It is understandable that in the process of preparing the photovoltaic module, the battery layer is formed by connecting the electrical connector 100 to the battery string 200, and the front plate, the adhesive film layer, the battery layer, the adhesive film layer and the back plate are stacked in sequence, and the photovoltaic module can be obtained after lamination. Among them, in the photovoltaic module after lamination, the curved structure on the body 110 is formed to extend along the first direction X after lamination of the photovoltaic module, and at least part of the body is a planar structure. Ideally, the body 110 of the electrical connector 100 will extend along the first direction X, and most or all of the body 110 of the electrical connector 100 will be a planar structure as a whole, that is, the body 110 is in or substantially in the same plane as a whole, which reduces the problem of uneven local deformation of the electrical connector 100 causing up and down bulges, which helps to improve the process quality of the photovoltaic module.

[0123] Alternatively, if Fig.11 and Fig.12 As shown, an embodiment of the present application further provides a photovoltaic assembly, including a battery string 200 and the electrical connector 100 in the above embodiment; a bus bar 210 is provided at at least one end of the battery string 200, and the main body 110 is connected to the bus bar 210.

[0124] In the embodiment of the present application, by providing a plurality of slotted structures 120a arranged at intervals in the body 110 of the electrical connector 100, when the electrical connector 100 is used for mid-span electrical connection in a photovoltaic module, during the lamination process, the plurality of slotted structures 120a provided in the body 110 facilitate the free flow of materials around the electrical connector 100, thereby reducing the influence of the material flow on the electrical connector 100, and reducing the problem of displacement or distortion of the electrical connector 100. At the same time, the body 110 is provided with a curved structure at a portion corresponding to at least one slotted structure 120, and the deformation of the curved structure can adapt to the length change requirement of the electrical connector 100 during use. After lamination of the photovoltaic module, the curved structure on the body 110 is formed into a structure extending along the first direction X and at least part of the body is in a plane, thereby reducing the problem of up and down bulges caused by uneven local deformation of the electrical connector 100, thereby helping to improve the process quality of the photovoltaic module.

[0125] It should be noted that the photovoltaic assembly in the present application may include the electrical connector 100 in any of the above embodiments. The specific structure of the electrical connector 100 can be found in the above content, and the embodiments of the present application will not be repeated here.

[0126] Alternatively, if Fig.13 and Fig.14 As shown, the photovoltaic assembly further includes a conductive tape 300 ; the conductive tape 300 includes a first end 310 and a second end 320 opposite to each other, the first end 310 is connected to the body 110 , and the second end 320 is connected to the bus bar 210 .

[0127] In the embodiment of the present application, the connection function between the electrical connector 100 and the bus bar 210 is realized by the conductive tape 300, which can not only ensure the conductive connection requirement between the electrical connector 100 and the bus bar 210, but also utilize the flexible deformation ability of the conductive tape 300 to adapt to the connection between the electrical connector 100 and the bus bar 210.

[0128] Compared with the fixed connection between the electrical connector 100 and the bus bar 210, the connection between the electrical connector 100 and the bus bar 210 is achieved by using the conductive tape 300, which can reduce the connection stress between the electrical connector 100 and the bus bar 210, thereby improving the connection stability.

[0129] Alternatively, if Fig.14 and Fig.15 As shown, the conductive tape 300 further includes a transition portion 330 disposed between the first end 310 and the second end 320 , and the transition portion 330 is a curved structure.

[0130] In an embodiment of the present application, a transition portion 330 is provided between the first end 310 and the second end 320 of the conductive tape 300, and the transition portion 330 is made to have a curved structure so that the position change between the electrical connector 100 and the bus bar 210 can be adapted through the deformation of the transition portion 330 during the processing of the photovoltaic module, thereby further improving the connection stability between the electrical connector 100 and the bus bar 210.

[0131] It is understandable that during the processing of photovoltaic modules, especially during the lamination process, the relative position between the electrical connector 100 and the bus bar 210 will change due to temperature changes and the impact of material flow. In the embodiment of the present application, a conductive tape 300 with a transition portion 330 having a curved structure is used to achieve the connection between the electrical connector 100 and the bus bar 210. The size of the conductive tape 300 can be adjusted by the deformation of the transition portion 330, thereby effectively improving the connection stability between the electrical connector 100 and the bus bar 210.

[0132] In some embodiments, the curved structural shape of the transition portion 330 may include a circular arc, an elliptical arc, a rectangle, a triangle, a trapezoid, a polygon, or other irregular shapes formed by a combination of straight lines or curves. Technical personnel in this field can flexibly set it according to actual needs, and the embodiments of the present application are not limited here.

[0133] Alternatively, if Fig.16 As shown, the conductive tape 300 includes a flexible base layer 301, a second conductive layer 302 and a second connecting layer 303 which are stacked in sequence, one side of the second conductive layer 302 is connected to the flexible base layer 301, the other side of the second conductive layer 302 is connected to the second connecting layer 303, and the second connecting layer 303 is connected to the body 110 and / or the bus bar 210.

[0134] In the present application example, a flexible base layer 301 is provided to ensure that the conductive tape 300 has a certain mechanical strength; a second conductive layer 302 is provided to achieve the conductive function; and a second connecting layer 303 is provided to ensure that the conductive tape 300 is connected and fixed to the main body 110 and / or the bus bar 210.

[0135] In a specific application, a flexible base layer 301, a second conductive layer 302 and a second connection layer 303 may be provided.

[0136] The layers 303 are stacked in sequence along the third direction Z, so that the structural arrangement of the conductive tape 300 is adapted to the structure of the photovoltaic module.

[0137] Alternatively, if Fig.16As shown, along the direction from the flexible base layer 301 to the second connection layer 303, the thickness of the flexible base layer 301 is H3, which satisfies: 20um≤H3≤200um. By setting the value range of the thickness H3 of the flexible base layer 301, it is ensured that the conductive tape 300 has a certain mechanical strength. At the same time, it is prevented that the thickness of the flexible base layer 301 is too thick to affect the use of the conductive tape 300.

[0138] Exemplarily, the thickness H3 of the flexible base layer 301 can be set to any value such as 20um, 30um, 50um, 80um, 100um, 120um, 150um, 170um, 200um, or a range between any two values.

[0139] The flexible base layer 301 may be made of insulating materials, for example, polyethylene terephthalate, polyolefin materials, polyurethane, polyethylene and the like.

[0140] Alternatively, if Fig.16 As shown, along the direction from the flexible base layer 301 to the second connection layer 303, the thickness of the second conductive layer 302 is H4, which satisfies: 100um≤H4≤400um. By setting the value range of the thickness H4 of the second conductive layer 302, the conductive tape 300 is ensured to have stable conductive performance, while preventing the conductive tape 300 from being too thick as a whole and affecting the actual use of the conductive tape 300.

[0141] Exemplarily, the thickness H4 of the second conductive layer 302 can be set to any value such as 100um, 150um, 200um, 250um, 300um, 350um, 400um, or a range between any two values.

[0142] Alternatively, if Fig.16 As shown, along the direction from the flexible base layer 301 to the second connection layer 303, the thickness of the second connection layer 303 is H5, which satisfies: 1um≤H5≤20um. The value range of the thickness H5 of the second connection layer 303 is set to ensure the connection performance of the conductive tape 300. If the thickness of the second connection layer 303 is too thick, it will cause material waste and increase material cost.

[0143] Exemplarily, the thickness H5 of the second connection layer 303 can be set to any value such as 1um, 5um, 8um, 10um, 13um, 15um, 17um, 20um, or a range between any two values.

[0144] Alternatively, if Fig.17 As shown, the photovoltaic module further includes a conductive adhesive layer 400 , which is disposed between the body 110 and the bus bar 210 , and the body 110 is connected to the bus bar 210 via the conductive adhesive layer 400 .

[0145] In the embodiment of the present application, the conductive adhesive layer 400 is used to achieve the bonding and fixing of the body 110 and the bus bar 210, which can not only meet the connection function of the electrical connector 100 and the bus bar 210, but also ensure the electrical conductivity between the electrical connector 100 and the bus bar 210. At the same time, since the conductive adhesive layer 400 has a certain degree of flexibility, it can appropriately adapt to the relative position change between the electrical connector 100 and the bus bar 210.

[0146] Exemplarily, the conductive adhesive layer 400 can be made of materials such as epoxy conductive adhesive, silicone conductive adhesive, acrylic conductive adhesive, etc. Of course, the conductive adhesive layer 400 can also be made of other types of conductive adhesive materials, which is not limited in the embodiments of the present application.

[0147] Optionally, the main body 110 and the bus bar 210 at least partially overlap, and the orthographic projection area of ​​the conductive adhesive layer 400 in the direction from the main body 110 to the bus bar 210 (i.e., along the third direction Z) is S1, and the orthographic projection area of ​​the overlapping part of the main body 110 and the bus bar 210 is S2, satisfying: S1≤S2.

[0148] In a specific application, the body 110 and the bus bar 210 at least partially overlap along the third direction Z to serve as or form an overlapping portion, and a conductive adhesive layer 400 is provided between the overlapping portions of the body 110 and the bus bar 210 to achieve bonding and fixing of the body 110 and the bus bar 210 .

[0149] In the embodiment of the present application, by setting the orthographic projection area S1 of the conductive adhesive layer 400 to be less than or equal to the orthographic projection area S2 of the overlapping portion of the main body 110 and the bus bar 210, while satisfying the connecting function of the conductive adhesive layer 400 on the electrical connector 100 and the bus bar 210, the conductive adhesive layer 400 is prevented from interfering with other components in the photovoltaic module due to excessive surface connection.

[0150] Alternatively, if Fig.17 As shown, in the direction from the body 110 to the bus bar 210 (i.e., along the third direction Z), the thickness of the conductive adhesive layer 400 is H6, which satisfies: 10um≤H6≤100um. By setting the value range of the thickness H4 of the conductive adhesive layer 400, the conductive adhesive layer 400 has a certain thickness, thereby ensuring the connection strength between the electrical connector 100 and the bus bar 210, and at the same time, avoiding the conductive adhesive layer 400 being too thick to affect the thickness setting of the photovoltaic module.

[0151] Exemplarily, the thickness H6 of the conductive adhesive layer 400 can be set to any value such as 10um, 20um, 30um, 50um, 70um, 100um, or a range between any two values.

[0152] Optionally, the photovoltaic module includes a plurality of electrical connectors 100, and the plurality of electrical connectors 100 are connected; the plurality of electrical connectors 100 connect a bus bar at one end of a battery string with a bus bar at the other end of another battery string.

[0153] It should be clarified that the multiple here can refer to one or more than one. It can be understood that, the electrical connector 100 is set to one, and the one electrical connector 100 connects the bus bar at one end of a battery string to the bus bar at the other end of another battery string; or, the electrical connector 100 is set to multiple, and multiple electrical connectors 100 are connected; the multiple electrical connectors 100 connect the bus bar at one end of a battery string to the bus bar at the other end of another battery string. By setting up multiple electrical connectors 100, the cross-distance connection of different distances in the photovoltaic module can be met to adapt to different application scenarios. In addition, by setting up multiple electrical connectors 100 to be connected to each other, during the lamination process, the relative movement between the two electrical connectors 100 can be used to adjust or reduce the material flow stress on the electrical connector 100, thereby reducing the problems of convexity and delamination in the photovoltaic module.

[0154] In a specific application, when multiple electrical connectors 100 are connected to each other, two adjacent electrical connectors 100 can be connected by a fixed or movable connection, for example, by welding, or by a conductive tape 300, or by a conductive adhesive layer 400. Of course, other connection methods can also be used to achieve electrical connection. Specifically, in Fig.11 In the embodiment, a connection method of multiple electrical connectors 100 can be used. After the multiple electrical connectors 100 are connected in sequence, the multiple electrical connectors 100 connect the bus bar at one end of one battery string to the bus bar at the other end of another battery string. The connection structure of the electrical connector 100 and the conductive tape 300 and the conductive adhesive layer 400 can refer to the above content, and the embodiments of the present application will not be repeated here.

[0155] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0156] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An electrical connector, characterized in that: include: A main body, wherein a plurality of slotted structures are arranged at intervals along a first direction, and the main body is in a curved structure at a portion corresponding to at least one of the slotted structures; the electrical connector is used for electrical connection across distances in a photovoltaic module; and / or the main body is made of a conductive material.

2. The electrical connector according to claim 1, characterized in that: The portion corresponding to the slotted structure in the main body is set as a fork unit, and the fork unit includes a first connecting portion and a second connecting portion arranged on both sides of the slotted structure along a second direction, and the first connecting portion and the second connecting portion in at least one of the fork units are bent toward a third direction, the second direction intersects with the first direction, and the third direction is perpendicular to the first direction and the second direction, respectively.

3. The electrical connector according to claim 2, characterized in that: The bending directions of the first connection portion and the second connection portion in at least one of the bifurcated units are opposite.

4. The electrical connector according to claim 2 or 3, characterized in that: A plurality of bifurcated units are disposed in the body, and the first connecting portion and the second connecting portion in each of the bifurcated units are bent toward the third direction.

5. The electrical connector according to claim 4, characterized in that: The bending directions of the first connecting portion and the second connecting portion in each of the bifurcated units are opposite.

6. The electrical connector according to claim 5, characterized in that: The bending directions of the first connection parts in two adjacent bifurcated units are opposite; or, the bending directions of the first connection parts in two adjacent bifurcated units are the same.

7. The electrical connector according to claim 2, characterized in that: Along the first direction, the length of the slotted structure is L1, which satisfies: 5mm≤L1≤50mm; and / or, along the first direction, the distance between two adjacent slotted structures is L2, satisfying: 3mm≤L2≤50mm; And / or, along the second direction, the width of the slotted structure is M, satisfying: 0 mm <M≤5mm。 8. The electrical connector according to claim 2, characterized in that: Along the third direction, the total thickness of the body is H0, satisfying: 0.1mm≤H0≤1mm; and / or, along the third direction, the maximum height of the curved structure away from the body is H, satisfying: 10um≤H≤500um.

9. The electrical connector according to claim 1, characterized in that: The body comprises: a first conductive layer and a first connecting layer which are stacked, wherein the first connecting layer is arranged on at least one side of the first conductive layer.

10. The electrical connector according to claim 9, characterized in that: The first connection layer includes one of a welding material layer or a conductive adhesive layer.

11. The electrical connector according to claim 9, characterized in that: Along the stacking direction of the first conductive layer and the first connecting layer, the thickness of the first conductive layer is H1, which satisfies: 100um≤H1≤900um; And / or, the thickness of the first connection layer is H2, satisfying: 10um≤H2≤30um.

12. A photovoltaic module, characterized in that: include: A battery string and an electrical connector, wherein the electrical connector is used for electrical connection across distances in a photovoltaic module; the electrical connector comprises a main body, wherein the main body is provided with a plurality of slotted structures spaced apart along a first direction, the main body extending along the first direction and at least partially being a planar structure; a bus bar is provided at least at one end of the battery string, and the main body is connected to the bus bar.

13. A photovoltaic module, characterized in that: include: A battery string, and an electrical connector as described in any one of claims 1 to 11; a bus bar is provided at at least one end of the battery string, and the body is connected to the bus bar.

14. The photovoltaic module according to claim 12 or 13, characterized in that: The photovoltaic assembly further includes: a conductive tape; the conductive tape includes a first end and a second end opposite to each other, the first end is connected to the body, and the second end is connected to the bus bar.

15. The photovoltaic module according to claim 14, characterized in that: The conductive tape further includes a transition portion disposed between the first end and the second end, and the transition portion is in a curved structure.

16. The photovoltaic module according to claim 14 or 15, characterized in that: The conductive tape comprises a flexible base layer, a second conductive layer and a second connection layer which are stacked in sequence, and the second connection layer is connected to the body and / or the bus bar.

17. The photovoltaic module according to claim 16, characterized in that: Along the direction from the flexible base layer to the second connecting layer; the thickness of the flexible base layer is H3, satisfying: 20um≤H3≤200um; And / or, the thickness of the second conductive layer is H4, satisfying: 100um≤H4≤400um; And / or, the thickness of the second connection layer is H5, satisfying: 1um≤H5≤20um.

18. The photovoltaic module according to claim 12 or 13, characterized in that: The photovoltaic module further includes: a conductive adhesive layer, which is disposed between the body and the bus bar, and the body is connected to the bus bar through the conductive adhesive layer.

19. The photovoltaic module according to claim 18, characterized in that: In the direction from the body to the bus bar, the body and the bus bar at least partially overlap, the orthographic projection area of ​​the conductive adhesive layer is S1, and the orthographic projection area of ​​the overlapping portion of the body and the bus bar is S2, satisfying: S1≤S2.

20. The photovoltaic module according to claim 18, characterized in that: In the direction from the body to the bus bar, the thickness of the conductive adhesive layer is H6, satisfying: 10um≤H6≤100um.

21. The photovoltaic module according to claim 12 or 13, characterized in that: The electrical connector is provided as one, and the electrical connector connects the bus bar at one end of one battery string with the bus bar at the other end of another battery string; or, the electrical connector is provided as multiple, and multiple electrical connectors are connected; the multiple electrical connectors connect the bus bar at one end of one battery string with the bus bar at the other end of another battery string.

22. The photovoltaic module according to claim 12 or 13, characterized in that: The curved structure on the body is formed into a structure extending along the first direction and at least partially in a plane in the first direction after being laminated by the photovoltaic components.

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