Hot bar soldering

摘要

A solar cell module comprises a solar cell die that is soldered to a substrate. The substrate comprises one or more power contacts. A power conductor is soldered to a power contact, thereby electrically coupling the power conductor to the solar cell die. A pre-heat module heats a first side of the substrate at a first area to a first temperature for a first duration. Then, a solder heat source solders a power conductor to a power contact at a second area of the substrate at a second temperature for a second duration. The resulting solder connection at the power conductor is less prone to cold-solder defects. The temperature of the pre-heat module is controlled to promote curing of an RTV sealant used in the manufacture of the solar cell module. The temperature of the solder heat source is controlled to avoid burning and degrading of the RTV sealant.

主权项

1. A system for soldering a power conductor to a power contact of an electronic component module, the electronic component module comprising an electronic component soldered to a substrate at a first area of the substrate and having a power contact at a second area of the substrate, the system comprising:
a. a pre-heating source configured to selectively extend and retract to separate from and physically contact the substrate while the substrate is stationary within the system in order to pre-heat the first area of the substrate to a first temperature for a first duration; and b. a U-shaped soldering heat source having a first protruding edge, a second protruding edge and an open channel between the first and second edges, wherein both the first protruding edge and the second protruding edge of the soldering heat source are configured to heat up and selectively thermally contact the power conductor in order to solder the power conductor to the power contact at a second temperature at a second area of the substrate for a second duration.