A solar cell includes a silicon substrate, a first doped region, and a second doped region. The first doped region includes a first passivated contact region on the silicon substrate and a second passivated contact region on the first passivated contact region. The first passivated contact region includes a first doped layer, a first passivation layer, and a second doped layer. The second passivated contact region includes a second passivation layer and a third doped layer. The second doped region includes a third passivation layer. Each of the first and third passivation layers includes a porous structure. One of the first and second doped regions is a P-type doped region, the other of the first and second doped regions is an N-type doped region, and a hole density of a corresponding passivation layer in the P-type doped region is greater than that in the N-type doped region.

Wire-based metallization and stringing techniques for solar cells, and the resulting solar cells, modules, and equipment, are described. In an example, a substrate has a surface. A plurality of N-type and P-type semiconductor regions is disposed in or above the surface of the substrate. A conductive contact structure is disposed on the plurality of N-type and P-type semiconductor regions. The conductive contact structure includes a plurality of conductive wires, each conductive wire of the plurality of conductive wires essentially continuously bonded directly to a corresponding one of the N-type and P-type semiconductor regions.

Disclosed are a solar cell, a method of making, and a photovoltaic module. The solar cell includes: a substrate, having a first surface and a second surface opposite to the first surface; multiple first doped portions, on the first surface; multiple second doped portions on the first surface; and multiple isolation trenches, each of which is formed between a respective first doped portion and an adjacent second doped portion. The isolation trenches each have opposing first sidewall and second sidewall that extend along a second direction, and at least one of the first sidewall and the second sidewall has a corrugated structure that undulates while extending along the first direction. The second direction intersects with the first direction. Embodiments of the present disclosure at least contribute to improving the photoelectric conversion efficiency of solar cells.

Provided is a curved photovoltaic module. The curved photovoltaic module includes a plurality of cell strings including a cell layer, a crest, and/or a trough. The plurality of cell strings are connected in series side by side in a tangent direction of a highest point of the crest. Adjacent cell strings are distributed at two opposite sides of the highest point of the crest and/or at two facing sides of a lowest point of the trough.

This application provides a photovoltaic module, and relates to the field of photovoltaic technologies. The photovoltaic module includes a conductive interconnection member. The conductive interconnection member is electrically connected to front electrode pads of a first solar cell and back electrode pads of a second solar cell adjacent to the first solar cell. A distance between a first solar cell edge and the front electrode pad adjacent to the first solar cell edge is D1, a distance between a second solar cell edge and the front electrode pad adjacent to the second solar cell edge is D3, a distance between a fourth solar cell edge and the back electrode pad adjacent to the fourth solar cell edge is D2, a distance between a third solar cell edge and the back electrode pad adjacent to the third solar cell edge is D4. A sum of D1 and D2 is greater than a sum of D3 and D4.

A solar cell includes a solar cell body, a plurality of fingers, and a plurality of first interconnection structures. At least a part of regions of different first interconnection structures distributed at intervals along a second direction are collinear with a same connection line of a plurality of connection lines. A quantity of connection lines located on the same target surface is N1, a quantity of first interconnection structures intersecting with a target line segment located on the target surface is N2, and N2<N1. The target line segment is a connection line segment between a midpoint of an edge that has a larger length in two edges of the target surface extending along a first direction and being arranged opposite to each other and a vertex-angle endpoint corresponding to an edge that has a smaller length in the two edges.

A cell string includes back-contact solar cells, that are arranged at intervals in a first direction and have a backlight surface provided with P-type doped layers and N-type doped layers alternately arranged in a second direction and both extending in the first direction. A spacer region is between adjacent back-contact solar cells. In the adjacent back-contact solar cells, the P-type doped layer of one back-contact solar cell corresponds to the N-type doped layer of the other back-contact solar cell in the first direction. A conductive connector is fixed and electrically connected to both the P-type and the N-type doped layers. In the spacer region, in the second direction, every other conductive connector is cut off and forms a suspended segment in the spacer region, and a length of the suspended segment is less than a distance between two adjacent conductive connectors.

A layered textile energy storage device can include first and second encasing layers, an anode, a cathode, and a flexible separator layer. The first and second encasing layers can each include a nylon fabric coated with a polyurethane. The anode can include a carbon fabric coated with anode active material, carbon nanotubes, and a binder material. The cathode can include a carbon fabric coated with cathode active material, carbon nanotubes, and a binder material. The flexible separator layer can be disposed between the anode and cathode to prevent internal shorting of the layered textile energy storage device. The anode, the cathode and the flexible separator layer can be disposed between the first and the second encasing layers.

A photovoltaic module and a method for manufacturing the photovoltaic module are provided. The photovoltaic module includes a cell module including multiple cell string groups and multiple first connection structures. Each cell string group includes multiple cell strings arranged along a first direction. Each cell string includes multiple solar cells and multiple second connection structures. Second connection structures located on a corresponding solar cell include third connection structures interleaved with fourth connection structures, and each third connection structure is spaced from an adjacent fourth connection structure by a distance L in the first direction. A second connection structure connected to an end of a respective end first connection structure is spaced apart by a distance N in the first direction from an adjacent second connection structure connected to an end of another end first connection structure, and the distance N is less than twice the distance L.

A solar battery according to the present embodiment has an electrode, which includes a metal and an adhesive material, formed in a conductive region including a polycrystalline semiconductor layer, and thus, the electrical characteristics of the solar battery may be improved and the manufacturing process thereof may be simplified. More specifically, the solar battery includes a semiconductor substrate, and the conductive region including the polycrystalline semiconductor layer is positioned on one surface of the semiconductor substrate.