Soldering Solar Battery

A photovoltaic module for directly converting solar energy to electrical energy has a layered body, in which a transparent electrode layer, a photovoltaic semiconductor layer and a rear surface electrode layer are laminated in this order on an insulating substrate, such as a glass substrate. The layered body is divided into a plurality of photoelectric converting cells by a laser scriber or the like. The photovoltaic cells are electrically connected to one another in series or parallel.

Conventionally, when lead wires are connected to the lead wire soldering regions on both sides of the photovoltaic module, first, solder bumps are formed as preliminary solder in the lead soldering regions, thereafter lead wires made of solder-plated copper foil or the like are placed along the row of the solder bumps, and the lead wires are soldered to the solder bumps. These process are performed by manual works.

The ultrasonic soldering element is to provide a method and an apparatus for soldering a lead wire to a solar battery, which can automatically connect lead wires to a row of solder bumps formed in a lead wire soldering region of a solar battery, so that the working efficiency can be improved.