Methods are disclosed for assembling PV modules using connectors that have strain relief elements. Strings can be inspected individually and dimensional information can be obtained to layup the strings into a PV module in a specific manner. Portions of the strings can be soldered using elevators to lift connectors into place, and then applying heat to both sides of the connector.

A photovoltaic module can be constructed from one or more strings, with each of the strings being constructed from a plurality of cascaded solar cells. A connector can electrically connect the strings to one another. The connector can include strain relief connectors that extend between the connector and the strings to help reduce effects caused by thermal expansion.

The invention relates to a method and to a device for the industrial wiring and final testing of photovoltaic concentrator modules, comprising a module frame, a lens disc, a sensor carrier disc, and electrical cable routing, having the following features: a) a laser contacting device for contactless connection of connecting lines between the individual sensor (11) and of connection elements (17) and of collector contact plates (19), wherein the cable routing on the sensor carrier disc (13) has in each case 5 CPV sensors connected in parallel as the basic structure, and said parallel circuits are connected in series, b) a device for testing electrical properties, wherein the CPV sensors (11) per se have a specific voltage applied thereto, and the light emitted therefrom via the lenses (15) is detected and evaluated, and c) a device for testing the tightness (5) of finished concentrator modules, wherein compressed air is applied to the interior of said modules and testing for the emission of compressed air is carried out.

Photovoltaic (PV) cells that can be interconnected with improved interconnect joints to form PV cell strings and PV modules. The improved interconnect joints comprise at least two types of adhesive bonding regions to maximize both electrical conductivity and mechanical strength of interconnect joints coupling terminals of PV cells. The disclosed approaches to PV cell interconnection provide greater manufacturing rates and higher quality PV cell strings and PV modules.

A flexible circuit that allows a standardized connection interface to connect flexible solar cell(s) for easy integration into electronics devices. This interconnection scheme does not limit the intrinsic solar cell flexibility and may conform to standard design practices in electronic device manufacturing. In an aspect, a solar module is described that includes one or more solar panels and a flexible trace or interconnect having conductive wires inside an insulation material. In another aspect, an electronic device is described that includes a circuit board, one or more solar panels and a flexible trace or interconnect having conductive wires inside an insulation material. The electronic device may be an internet-of-things (IoT) device or an unmanned aerial vehicle (UAV), for example. In yet another aspect, a lighting module is described that includes one or more lighting panels and a flexible trace or interconnect having conductive wires inside an insulation material.

Multi-operation tools for photovoltaic cell processing are described. In an example, a multi-operation tool includes a conveyor system to move a photovoltaic (PV) cell continuously along a conveyor path through a laser scribing station and an adhesive printing station. Furthermore, the PV cell may be aligned to a laser head of the laser scribing station and a printer head of the adhesive printing station in a single alignment operation prior to being laser scribed and printed with an adhesive in a continuous process.

A solar cell module, having at least one first module segment, wherein the first module segment includes a first subsegment and at least one second subsegment, the first and the second subsegment each have at least one solar cell string and each solar cell string has a plurality of solar cells interconnected in series. The first module segment includes a first and an at least second bypass element and bypass connectors. These bypass elements are interconnected via the bypass connectors within the module segment. The shading properties, the electrical characteristics and the material expenditure in the production of the solar module are advantageously adapted via advantageous circuit and geometry arrangements of the elements.

A photovoltaic module incorporates a lamination including a back-sheet, an array of solar cells supported on the back-sheet, and a transparent protective covering over the array of solar cells. The solar cells are arranged in offset or staggered patterns on the back-sheet to present a more random and less rigid industrial appearance to an observer. In some cases, cleaved solar cell segments are arranged into groups that are staggered on the back-sheet. This allows for finer control of the net voltage produced by a module. In other embodiments, full single wafer solar cells are arranged into larger groups, which themselves are staggered on the back-sheet. In either case, the result is a photovoltaic module with an appearance that is more organic and acceptable to homeowners and architects than traditional modules having cells arranged in rigid aligned rows and columns.

A welding method for a welding strip of a back-contact solar cell chip includes the following steps: firstly, welding small chip assemblies of a back-contact solar cell to be interconnected to form a small cell string through an interconnected bar; then, punching the small cell string into small cell assemblies separated from each other through a cutting or punching process; subsequently, flexibly welding the small cell assemblies by a bus bar to reach a required length of a finished assembly product; and finally, breaking the bus bar through a post cutting or punching process to form cell assemblies with positive and negative electrodes connected in series or in parallel. The method makes the welding surfaces of the solar cell chips be on the same surface through using the back-contact solar cell chips, so that the interconnected bar of the solar cell chips can be welded rapidly and continuously.

The disclosure is applicable to the technical field of solar cells and provides a solar cell and a method for manufacturing thereof, a cell assembly, and a photovoltaic system. In the solar cell, a P-type silicon substrate is used as a base layer, a first surface of the P-type silicon substrate is not completely covered with P-type doped layers, and a second surface of the P-type silicon substrate is not completely covered with N-type doped layers. Moreover, on the P-type silicon substrate, the P-type doped layers are locally arranged on a light-facing surface. In addition, the N-type doped layers are locally arranged on a light-sheltered surface, and a total area of all third regions is set to be greater than that of all first regions.