Photovoltaic flux can play a role in soldering cells. However, the welding effect does not only depend on the flux. The welding effect,{} is related to the composition of the flux, the wet weight of the cell silver paste, the composition of the silver paste, the welding temperature and time of the stringer. If a normal stringer has a welding abnormality,{},{}, no matter how it is adjusted, the welding is not good, and even there are over-welding and cold welding on a cell, it is basically certain that the silver paste of the cell is thin or the printing silver paste ,{},{}composition is insufficient, which involves the cost reduction of the cell factory,{},{}.

However, such a cell does not mean that the problem of over-welding and cold welding cannot be solved. If the wet weight is not reduced much, only 3 to 5 mg, you can try to replace some more expensive fluxes to compensate,{},{}.

If the cell with a narrow matching window can be solved by replacing the flux, it means that the previous flux is not as good as this one, but too expensive flux is not conducive to the cost reduction of the component factory. In this era of affordable access to the Internet and photovoltaics for all, the cheaper the product, the more competitive it is in the market!

At present, the flux manufacturers used by component factories are Asahi, Esun, etc. It is worth noting that it does not mean that the best product is necessarily the best. Each flux manufacturer has many different formulas of flux. Just like Xiaomi mobiles phoness are cheap and Apple mobiles phoness are expensive, but it does not mean that every Xiaomi product is inferior to Apple.

We know that the crystallization of flux has a lot to do with the type of flux. The factors closely related to the crystallization of flux are: the initial characterization form of the raw materials, the amount of addition, the volatilization speed of the carrier, the amount of flux spilled, etc. Controlling these four problems can relatively reduce the crystallization problem of flux.