Solar cell module
The innovative solar cell module design with overlapping transverse connectors and offset solar cell arrangements improves area utilization and efficiency by minimizing interconnection length and series resistance, facilitating cost-effective production.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- FRAUNHOFER GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG EV
- Filing Date
- 2025-11-04
- Publication Date
- 2026-05-15
AI Technical Summary
Existing solar cell modules have inefficient area utilization due to the arrangement and electrical connection of solar cell strings, limiting the overall efficiency per total module area.
A solar cell module design with overlapping string cross-connectors and offset arrangements of solar cells, utilizing transverse connectors and longitudinal extensions to reduce interconnection length and increase area coverage, combined with adhesive bonding for electrical connections.
Enhances area utilization and efficiency by reducing interconnection length, allowing for a more compact design with lower series resistance and cost-effective manufacturing.
Smart Images
Figure EP2025081753_15052026_PF_FP_ABST
Abstract
Description
[0001] title
[0002] solar cell module
[0003] Description
[0004] The present invention relates to a solar cell module according to claim 1.
[0005] Solar cell modules typically consist of multiple solar cell strings, each string comprising multiple solar cells that are typically connected in series. The solar cell strings are typically arranged parallel to one another and connected in parallel or in series using string connectors. Copper strips with solder coating are typically used as connectors. The connectors are joined to the solar cell strings using a soldering process with infrared lamps, induction, or contact soldering.
[0006] The arrangement and electrical connection of the solar cells in a module directly affects the area utilization and thus the efficiency per total module area.
[0007] It is therefore an object of the present invention to provide a solar cell module which enables a more compact design, so that a larger proportion of the total area of the solar cell module is covered by the solar cells.
[0008] This problem is solved by a solar cell module according to claim 1. Advantageous embodiments are found in the dependent claims.
[0009] The solar cell module according to the invention comprises at least a first and a second solar cell string, wherein the first and the second solar cell string each comprise a plurality of electrically interconnected solar cells. The solar cells of the first solar cell string are arranged in a first row along a first longitudinal extent, and the solar cells of the second solar cell string are arranged in a second row along a second longitudinal extent parallel to the first longitudinal extent.
[0010] 34835-P-DE Di / co 04.11.2025 A terminal first connecting solar cell of the first solar cell string is electrically connected to a terminal second connecting solar cell of the second solar cell string by means of a string cross connector of the solar cell module.
[0011] It is essential that the string cross-connector is arranged to partially overlap the first connecting solar cell, and that the string cross-connector is arranged without overlapping the second connecting solar cell, wherein at least one string longitudinal connector of the second connecting solar cell is arranged on the second connecting solar cell such that the string longitudinal connector of the second connecting solar cell partially overlaps the second connecting solar cell and projects beyond the second connecting solar cell in a connection area. The string longitudinal connector of the second connecting solar cell is arranged on the string cross-connector in the connection area and is electrically connected to it.
[0012] The solar cell module according to the invention has the advantage over previously known arrangements of solar cells in a solar cell module that the string cross-connector is arranged to overlap the first connecting solar cell. This results in the advantage of a reduction in the overall length of the interconnection structure, since the string cross-connector is not arranged in the direction of the longitudinal extent of the first solar cell string next to the first connecting solar cell, as is known from the prior art, but rather is arranged to overlap the first connecting solar cell. This results in increased area utilization of the solar cell module and thus, compared to the prior art, a higher area-to-surface ratio of the solar cell area relative to the total area of the solar cell module, thereby increasing the efficiency relative to the total area of the solar cell module.
[0013] In an advantageous embodiment, the string cross-connector is designed to have a longitudinal extension which is arranged transversely to the first longitudinal extension of the first solar cell string. In particular, it is advantageous that the string cross-connector (2a) forms an angle with the longitudinal extension of the first solar cell string in the range of 70° to 110°, preferably 80° to 100°, and particularly 90°.
[0014] 34835-P-DE Di / co 04.11.2025 An arrangement of the string cross-connector transverse to the first longitudinal extent of the first solar cell string, in particular perpendicular to the first longitudinal extent of the first solar cell string, enables a compact arrangement of the solar cells, especially in the case of parallel solar cell strings arranged next to each other.
[0015] In previously known solar cell modules, the solar cells are arranged on grid points of a regular, rectangular grid, so that the solar cells of a solar cell string are arranged along a straight line and also perpendicular to the longitudinal extent of the parallel solar cell strings, the solar cells are arranged next to each other on a straight line.
[0016] The solar cell module according to the present invention has the special feature that the string cross-connector is arranged to partially overlap the first connecting solar cell and is free from overlapping the second connecting solar cell, i.e., it does not cover the second connecting solar cell. A simple and compact arrangement for achieving the aforementioned arrangement of the string cross-connector is achieved in an advantageous embodiment in which the first and second connecting solar cells are arranged side by side with an offset, preferably with an offset in the range of 1 mm to 30 mm, more preferably 5 mm to 15 mm. If, for example, the two solar cell strings are arranged perpendicular to an edge of the solar cell module, the second connecting solar cell has a greater distance from the edge of the solar cell module than the first connecting solar cell due to the aforementioned offset.The gap created by the offset forms a connection area in which the longitudinal string connector of the second connecting solar cell is preferably electrically connected to the transverse string connector. Because the transverse string connector covers the first connecting solar cell, no connection area outside the first connecting solar cell is required for the transverse string connector. This results in a more compact arrangement of the solar cells. The end edges of the first and second connecting solar cells are therefore not arranged along a straight line. Advantageously, the end edges of the first and second connecting solar cells are arranged parallel to each other in a manner known per se, but unlike previously known arrangements, they exhibit the aforementioned offset.
[0017] 34835-P-DE Di / co 04.11.2025 In an advantageous embodiment, the aforementioned offset is the difference between the distance of the first connecting solar cell to the edge of the solar cell module and the distance of the second connecting solar cell to the edge of the solar cell module.
[0018] The longitudinal connector of the second connecting solar cell is preferably designed according to known solar cell connectors. Such solar cell connectors are elongated, strip-like elements, in particular designed as flat or round wire, which are used within a string to electrically connect two adjacent solar cells. Advantageously, the longitudinal connector of the second connecting solar cell therefore has a longitudinal extension that is arranged parallel to the second longitudinal extension of the second solar cell string. In particular, it is advantageous that the longitudinal connector of the second connecting solar cell is arranged transversely to the string cross connector. This results in simple assembly of the individual elements during the manufacture of the solar cell module.In particular, the longitudinal strand connector of the second connecting solar cell advantageously forms an angle with the transverse strand connector in the range of 70° to 110°, preferably 80° to 100°, particularly 90°.
[0019] In an advantageous embodiment, a plurality of longitudinal string connectors encompassing the longitudinal string connector of the second connecting solar cell is arranged on the second connecting solar cell. Each longitudinal string connector of the second connecting solar cell partially overlaps the second connecting solar cell and projects beyond it in a connection area. Furthermore, each longitudinal string connector of the plurality of longitudinal string connectors of the second connecting solar cell is arranged on the transverse string connector in the connection area and electrically connected to it. This results in a lower electrical series resistance due to the plurality of longitudinal string connectors. In particular, it is advantageous that the plurality of longitudinal string connectors comprises at least 3, and more specifically, at least 12 longitudinal string connectors.Advantageously, each longitudinal connector of the second connecting solar cell is designed to have a longitudinal extension that is arranged parallel to the second longitudinal extension of the second solar cell string. This results in simplified assembly during the manufacture of the solar cell module.
[0020] 34835-P-DE Tue / co 04.11.2025 In an advantageous embodiment, the strand cross-connector is bonded to the first connecting solar cell by means of adhesive bonding, preferably using an electrically conductive adhesive. The bonded connection by means of adhesive bonding eliminates the need for soldering and the associated disadvantages regarding the provision of solder and the heat generated during the soldering process. This enables more cost-effective manufacturing of the solar cell module.
[0021] Advantageously, the strand cross-connector is designed as a multilayer element comprising an electrically conductive substrate, which is preferably coated with an electrically conductive adhesive on at least one side, covering the entire surface. This facilitates simple wiring. Furthermore, the design of the electrical substrate allows for sufficient electrical conductivity to achieve a low series resistance.
[0022] Advantageously, the electrically conductive substrate is designed as a metal substrate, in particular as a copper-containing layer, preferably as a copper layer. In particular, it is advantageous to use a copper strip as the electrically conductive substrate.
[0023] In an advantageous embodiment, the string cross-connector is arranged directly on one side, preferably on the rear side, of the first connecting solar cell. This results in a cost-saving design of the solar cell module.
[0024] In an alternative advantageous embodiment, at least one intermediate connector, preferably a plurality of intermediate connectors, is arranged between the first connecting solar cell and the string cross-connector. The intermediate connector(s) are preferably arranged on a rear side of the first connecting solar cell. In particular, it is advantageous that the intermediate connector(s) do not project beyond the surface of the first connecting solar cell. The use of one or more intermediate connectors offers the advantage that the intermediate connectors can be designed for a high degree of mechanical and electrical conductivity in contact with the cross-connector. In particular, it is advantageous to use cell connectors known per se as intermediate connectors, which, however, are preferably, as
[0025] 34835-P-DE Di / co 04.11.2025, as previously described, do not extend beyond the surface of the first connecting solar cell. This allows the use of the known procedure steps for arranging cell connectors on the solar cell.
[0026] The string cross connector is electrically connected to the first connecting solar cell, in particular preferably to a rear contact of the first connecting solar cell, by means of the intermediate connector(s).
[0027] The electrical connection of the two solar cell strings described above is preferably carried out in an analogous manner at the opposite ends of the solar cell strings with further solar cell strings arranged on both sides of the solar cell strings.
[0028] In an advantageous embodiment, the first solar cell string has a terminal third connecting solar cell, and the second solar cell string has a terminal fourth connecting solar cell. The first and third connecting solar cells are thus arranged at opposite ends of the first solar cell string, and the second and fourth connecting solar cells are arranged at opposite ends of the second solar cell string.
[0029] At least one further longitudinal strand connector of the third connecting solar cell is arranged such that this further longitudinal strand connector partially covers the third connecting solar cell and projects beyond it in a connection area. In this advantageous embodiment, the solar cell module has, in addition to the first transverse strand connector, a second and a third transverse strand connector. The second transverse strand connector is arranged in the connection area on the further longitudinal strand connector of the third connecting solar cell and is electrically connected to it. The third transverse strand connector is arranged to partially cover the fourth connecting solar cell and is electrically connected to it.In this way, the previously described advantageous, compact arrangement can be achieved for a large number of adjacent solar cell strings.
[0030] 34835-P-DE Di / co 04.11.2025 An additionally advantageous compact design is achieved by arranging a bypass element, in particular a bypass diode, between the second and third string cross-connectors in a preferred embodiment. Bypass elements are known per se in solar cell modules to prevent local heating, so-called hotspots, especially in the case of partial shading of the solar cell module. This results in the advantage of lower mechanical stress in the bypass elements when the cross-connectors expand or contract due to temperature changes.
[0031] In particular, it is advantageous that the second and third strand cross connectors are designed with a longitudinal extension, wherein the longitudinal extensions of the second and third strand cross connectors are arranged parallel to the longitudinal extension of the first strand cross connector. This results in a compact design.
[0032] Advantageously, the second and third branch cross-connectors are arranged along a common straight line. This results in a compact design, particularly since there is no offset between the second and third branch cross-connectors. Furthermore, this allows for a compact arrangement of the bypass element with short pipe runs between the second and third branch cross-connectors.
[0033] Advantageously, to achieve a compact arrangement, the third and fourth connecting solar cells are also arranged side by side with an offset. In particular, the terminal edges of the third and fourth connecting solar cells are preferably not arranged along a straight line; preferably, the terminal edges of the third and fourth connecting solar cells are arranged parallel to each other in a manner known per se and exhibit the aforementioned offset.
[0034] Advantageously, all solar cells of the first and second solar cell strings are the same size. Furthermore, it is advantageous that the distance between the solar cells of the first and second solar cell strings is the same in the longitudinal direction. Accordingly, each solar cell of the first solar cell string advantageously has the same offset relative to a solar cell of the second solar cell string arranged next to it.
[0035] 34835-P-DE Tue / co 04.11.2025 Advantageously, the solar cells of the first solar cell string are electrically connected in series, and the solar cells of the second solar cell string are likewise electrically connected in series. The interconnection of the solar cells within the solar cell strings is preferably achieved by arranging one or more cell connectors on each solar cell, which project beyond the surface of the solar cell and are arranged on an adjacent solar cell to form an electrical connection with the adjacent solar cell.
[0036] Advantageously, in the solar cell module according to the invention, the first and second solar cell strings are connected in series. It is particularly advantageous that the string cross-connector is electrically connected to the rear side, specifically to a rear contact of the first connecting solar cell, either directly or indirectly, particularly via one or more intermediate connectors of the first connecting solar cell. Alternatively, or more preferably, the string cross-connector is also electrically connected indirectly, via the string longitudinal connector(s) of the second connecting solar cell, to a front side, specifically a front contact of the second connecting solar cell.
[0037] Further advantageous features and designs are explained below with reference to exemplary embodiments and the figures. These show:
[0038] Figure 1 shows a first embodiment of a solar cell module according to the invention and Figure 2 shows a second embodiment of a solar cell module according to the invention.
[0039] The figures are schematic representations, not to scale. Identical reference symbols within the figures denote identical or similarly functioning elements.
[0040] For clarity, Figures 1 and 2 show solar cell strings with only 2 solar cells each. Advantageously, the solar cell strings have at least 3, and in particular at least 5, solar cells. In the simplified representation in the figures, the longitudinal extents L of the solar cells arranged in a row are a
[0041] 34835-P-DE Tue / co 04.11.2025 Solar cell strings are therefore marked by a dashed line LI and L2 for clarity. The longitudinal extent LI is parallel to the longitudinal extent L2.
[0042] The embodiments shown in Figures 1 and 2 each depict a first solar cell string with two solar cells 1, wherein a terminal first connecting solar cell 1a of the first solar cell string is arranged at one end (top in the figures) and a terminal third connecting solar cell 1c of the first solar cell string is arranged at the opposite end (bottom in the figures). Furthermore, the embodiments shown in Figures 1 and 2 each depict a second solar cell string with two solar cells 1, wherein a terminal second connecting solar cell 1b of the second solar cell string is arranged at one end (top in the figures) and a terminal fourth connecting solar cell 1d of the second solar cell string is arranged at the opposite end (bottom in the figures).Figures 1 and 2 each show a top view of the back of the solar cell module and thus of the back of the solar cells 1. Each solar cell 1 has an electrical contact of a first polarity on its back and an electrical contact of an opposite polarity on its front.
[0043] The first embodiment of a solar cell module according to the invention shown in Figure 1 has two solar cell strings, wherein - as explained above - for better clarity each solar cell string is shown with only two solar cells.
[0044] The solar cell strings of the embodiments shown in Figures 1 and 2 each have solar cells electrically connected in series. The solar cells are electrically connected to each other in a manner known per se by means of cell connectors 6, in this case by means of 5 cell connectors each, wherein the cell connectors electrically connect the back of one solar cell to the front of the adjacent solar cell to form a series connection.
[0045] In both embodiments, the first connecting solar cell 1a of the first solar cell string is electrically connected to the second connecting solar cell 1b of the second solar cell string by means of a string cross-connector, which is the first string cross-connector 2a.
[0046] 34835-P-DE Di / co 04.11.2025 connected. The first string cross connector 2a is designed with a longitudinal extension which runs horizontally in the representation of Figures 1 and 2. The longitudinal extension of the first string cross connector 2a runs perpendicular to the first longitudinal extension LI of the first solar cell string and forms an angle of 90° with it.
[0047] In both embodiments, the first and second connecting solar cells (1a, 1lb) are arranged side by side with an offset V, which in this case is 7 mm. The end edges of the first and second connecting solar cells (1a, 1lb) are parallel, but exhibit the aforementioned offset V.
[0048] In both embodiments, five longitudinal strand connectors 4 are arranged on the second connecting solar cell lb. Each of these connectors has a longitudinal extension, the longitudinal extensions of which are arranged parallel to the longitudinal extension L2 of the second solar cell strand. The longitudinal strand connectors 4 partially cover the second connecting solar cell lb and project beyond its surface, upwards in Figures 1 and 2. In the overlapping areas, the longitudinal strand connectors 4 are electrically connected to the front surface of the second connecting solar cell lb. The first transverse strand connector 2a partially covers the rear surfaces of the longitudinal strand connectors 4 of the second connecting solar cell lb and is electrically connected to them in these areas.By means of the string cross connector 2a, a series connection of the first and the second solar cell string is thus formed.
[0049] The third connecting solar cell lc of the first solar cell string, analogous to the second connecting solar cell lb, has 5 string longitudinal connectors 4, which partially cover the third connecting solar cell lc on the front and are electrically conductively connected to the third connecting solar cell lc in these areas.
[0050] The solar cell modules according to the first and second embodiments have, in addition to the string cross connector 2a as the first string cross connector, further string cross connectors: a second string cross connector 2b and a third string cross connector 2c.
[0051] 34835-P-DE Tue / co 04.11.2025 The string cross connector 2b covers the rear sides of the string longitudinal connectors 4 of the third connecting solar cell lc and is electrically connected to the string longitudinal connectors 4 in these areas. The third string cross connector 2c is located on the rear side of the fourth connecting solar cell ld and is electrically connected to it. The second and third string cross connectors 2b, 2c project laterally beyond the boundary lines of the first and second solar cell strings. This allows the connection scheme to be continued for forming a solar cell module with a multitude of adjacent parallel solar cell strings.
[0052] The strand cross-connectors 2b and 2c are each configured with a longitudinal extension that runs horizontally in Figures 1 and 2. The longitudinal extensions of the second and third strand cross-connectors (2b, 2c) run parallel to the longitudinal extension of the first strand cross-connector (2a). In both embodiments, the second and third strand cross-connectors (2b, 2c) are arranged along a common straight line L3, which runs parallel to the longitudinal extensions of the strand cross-connectors (2b, 2c).
[0053] In the first embodiment shown in Figure 1, five intermediate connectors 7 are arranged on the rear side of the first connecting solar cell 1a and the third connecting solar cell 1d, and these connectors do not project beyond the surface of the connecting solar cells. The intermediate connectors 7 are each arranged between the connecting solar cell and the string cross-connector, so that the string cross-connectors 2a and 2b are each indirectly electrically connected to the connecting solar cells by means of the intermediate connectors 7.
[0054] In the second embodiment shown in Figure 2, the solar cell module has no intermediate connectors 7. The string cross connectors 2a and 2c are arranged directly on the rear sides of the connecting solar cells (1a, 1ld) and are electrically connected to them.
[0055] In the second embodiment, a bypass element 5, configured here as a bypass diode, is arranged between the second strand cross-connector 2b and the third strand cross-connector 2c. This prevents local heat generation, particularly in part.
[0056] 34835-P-DE Di / co 04.11.2025 Shading is avoided. Due to the arrangement between the string cross-connectors, only short electrical conductor paths are necessary for connecting the bypass element 5.
[0057] In the first and second embodiments, the solar cells 1 are designed as silicon solar cells, which, in a manner known per se, have metallic contact structures on their back and front surfaces for electrical contact. The cell connectors 6, the string longitudinal connectors 4, and the intermediate connectors 7 are designed as copper strips with a thickness of 0.2 mm and a width of 1 mm. In a modification of the embodiment, the aforementioned connectors are designed as round copper wire with a diameter of 250 pm. The use of other solar cells is also within the scope of the invention, in particular multi-junction solar cells, such as tandem solar cells, especially silicon-perovskite tandem solar cells.
[0058] The strand cross-connectors (2a, 2b, 2c) are each designed for a material-bonded, electrically conductive connection by means of adhesive bonding. Each strand cross-connector has a copper strip as an electrically conductive substrate, in this case with a thickness ranging from 30 pm to 100 pm (50 pm in this case) and a width ranging from 5 mm to 20 mm (10 mm in this case). The electrically conductive substrate is coated on the back side with conductive adhesive to form a material-bonded, electrically conductive connection with the back side of a solar cell, the intermediate connectors 7, or the strand longitudinal connectors 4.
[0059] In a modification of the first and second embodiments, the strand cross-connectors (2a, 2b, 2c) are designed as copper strips as previously described, but without a conductive adhesive coating. In this modification, the mechanical and electrically conductive connection is achieved using solder in a single soldering process.
[0060] 34835-P-DE Tue / co 04.11.2025 Reference list
[0061] 1 solar cell aa first connecting solar cell lb second connecting solar cell lc third connecting solar cell ld fourth connecting solar cell
[0062] 2a first strand cross connector
[0063] 2b second strand cross connector 2c third strand cross connector
[0064] 4 strand longitudinal connectors
[0065] 5 Bypass element
[0066] 6 cell connectors
[0067] 7 intermediate connectors
[0068] 34835-P-DE Tue / co 04.11.2025
Claims
Claims 1. Solar cell module, comprising at least a first and a second solar cell string, wherein the first and the second solar cell string each comprise a plurality of electrically interconnected solar cells, wherein the solar cells of the first solar cell string are arranged in a first row along a first longitudinal extent (LI) and the solar cells of the second solar cell string are arranged in a second row along a second longitudinal extent (L2) parallel to the first longitudinal extent, and a terminal first connecting solar cell (1a) of the first solar cell string is electrically connected to a terminal second connecting solar cell (1b) of the second solar cell string by means of a string cross-connector (2a) of the solar cell module, characterized in that the string cross-connector (2a) is arranged to partially cover the first connecting solar cell (1a).that the string cross connector (2a) is arranged free from any overlap of the second connecting solar cell (lb), that at least one string longitudinal connector is attached to the second connecting solar cell (lb), (4) of the second connecting solar cell is arranged such that the string longitudinal connector (4) of the second connecting solar cell partially covers the second connecting solar cell (lb) and extends beyond the second connecting solar cell (lb) in a connection area and that the string longitudinal connector of the second connecting solar cell (4) is arranged in the connection area on the string transverse connector (2a) and is electrically connected to it.
2. Solar cell module according to claim 1, characterized in that, 34835-P-DE Tue / co 04.11.2025 that the first and second connecting solar cells are located next to each other with a are arranged offset, preferably with an offset in the range of 1 mm to 30 mm, preferably 5 mm to 15 mm.
3. Solar cell module according to one of the preceding claims, characterized in that the string cross connector (2a) is designed having a longitudinal extension which is arranged transversely to the first longitudinal extension (LI) of the first solar cell string, in particular that the string cross connector (2a) forms an angle with the longitudinal extension (LI) of the first solar cell string in the range of 70° to 110°, preferably 80° to 100°, in particular 90°.
4. Solar cell module according to one of the preceding claims, characterized in that the first and second connecting solar cell (lb) are arranged side by side with an offset, preferably with an offset in a range of 1 mm to 30 mm, preferably 5 mm to 15 mm.
5. Solar cell module according to one of the preceding claims, characterized in that the string longitudinal connector (4) of the second connecting solar cell has a longitudinal extension which is arranged parallel to the second longitudinal extension (L2) of the second solar cell string.
6. Solar cell module according to one of the preceding claims, characterized in that a plurality of string longitudinal connectors (4) comprising the string longitudinal connector (4) of the second connecting solar cell (lb) is arranged on the second connecting solar cell, wherein each string longitudinal connector (4) of the second connecting solar cell (lb) partially covers the second connecting solar cell (lb) and projects beyond the second connecting solar cell (lb) in a connection area 34835-P-DE Tue / co 04.11.2025 16 is arranged and that each string longitudinal connector (4) of the second connecting solar cell (lb) is arranged in the connection area on the string transverse connector (2a) and is electrically connected to it, in particular that the majority of string longitudinal connectors has at least 3, in particular at least 12 string longitudinal connectors (4).
7. Solar cell module according to claim 6, characterized in that each string longitudinal connector (4) of the second connecting solar cell (lb) is designed having a longitudinal extension which is arranged parallel to the second longitudinal extension (L2) of the second solar cell string.
8. Solar cell module according to one of the preceding claims, characterized in that the strand cross connector (2a) is materially bonded to the first connecting solar cell (1a) by means of adhesive bonding, preferably by means of an electrically conductive adhesive.
9. Solar cell module according to claim 8, characterized in that the strand cross connector (2a) is designed as a multi-layered element which has an electrically conductive substrate which is coated at least partially, preferably over the entire surface of at least one side, with an electrically conductive adhesive.
10. Solar cell module according to claim 9, characterized in that the electrically conductive substrate is designed as a metal substrate, in particular as a copper-containing layer, preferably as a copper layer. 34835-P-DE Tue / co 04.11.2025 17 11. Solar cell module according to one of the preceding claims, characterized in that the string cross connector (2a) is arranged directly on a side, preferably on a rear side of the first connecting solar cell (1a).
12. Solar cell module according to one of claims 1 to 10, characterized in that at least one intermediate connector (7), preferably a plurality of intermediate connectors (7), is arranged between the first connecting solar cell (1a) and the string cross connector (2a) and the string cross connector is electrically connected to the first connecting solar cell (1a) by means of the intermediate connector(s) (7).
13. Solar cell module according to one of the preceding claims, characterized in that the first solar cell string has a terminal third connecting solar cell (lc) and the second solar cell string has a terminal fourth connecting solar cell (ld), that at least one further string longitudinal connector (4) of the third connecting solar cell (lc) is arranged on the third connecting solar cell (lc) such that the further string longitudinal connector (4) of the third connecting solar cell (lc) partially covers the third connecting solar cell (lc) and projects beyond the third connecting solar cell (lc) in a connection area, that the solar cell module has, in addition to the string transverse connector (2a) as the first string transverse connector (2a), a second and a third string transverse connector (2b, 2c),wherein the second strand cross-connector (2b) is arranged in the connection area on the further strand longitudinal connector (4) of the third connecting solar cell (lc) and is electrically connected to it, and wherein the third strand cross-connector (2c) is arranged partially covering the fourth connecting solar cell (ld) and is electrically connected to it. 34835-P-DE Tue / co 04.11.2025 14. Solar cell module according to claim 13, characterized in that a bypass element (5), in particular a bypass diode, is arranged between the second and third cross-connectors (2b, 2c).
15. Solar cell module according to claims 13 to 14, characterized in that the second and third strand cross connectors (2b, 2c) are designed to have a longitudinal extension, wherein the longitudinal extensions of the second and third strand cross connectors (2b, 2c) are arranged parallel to the longitudinal extension of the first strand cross connector (2a).
16. Solar cell module according to claim 15, characterized in that the second and the third strand cross connectors (2b, 2c) are arranged along a common straight line (L3). 34835-P-DE Tue / co 04.11.2025