Making the connection
Recent years have seen plenty of innovation when it comes to cell interconnection, and the tricks manufacturers employ to boost output at this stage nowadays go well beyond simply adding more busbars, and in many new module concepts these are forgone entirely. Synergies between cell interconnection and new innovations at other stages will also be key in shaping the modules of the future.
Adding more busbars to a module reduces the resistive loss, increasing the power output. As materials have become cheaper and complex processes mastered, manufacturers have continually added more busbars to push more watts out of their module offerings.The biggest power gain came with the move from three to four busbars. After four busbars, gains diminish, …
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