Abstract: Provided is a photovoltaic cell unit, including conductive connection strips respectively arranged on two sides of a cell sheet and parallel to each other. A front surface and a back surface of the cell sheet are respectively connected to the conductive connection strips through a plurality of metal wires. Also provided are two methods for manufacturing a photovoltaic module. The present disclosure can reduce the consumption of silver on the surface of the cell sheet, alleviate the shading of light by the metal wires, and speed up the manufacturing of photovoltaic modules. According to the present disclosure, a plurality of cell sheets can be placed simultaneously during cell sheet placement, thereby increasing the cell sheet placement speed.

Abstract: A double-sided soldering method for a solar cell includes following steps: providing, on an outer surface of a soldering carrier, a bearing surface provided with a routing groove, routing a first strip-shaped conductive connection member in the routing groove, attaching a cell to the bearing surface, tightening and attaching a second strip-shaped conductive connection member to an outer side surface of the cell, such that the second strip-shaped conductive connection member firmly presses the cell onto the first strip-shaped conductive connection member protruding from the bearing surface, and heating the first strip-shaped conductive connection member and the second strip-shaped conductive connection member, such that the first strip-shaped conductive connection member and the second strip-shaped conductive connection member are soldered on the cell.