Why in solar panel testing current has a linear relationship with cos

The current and voltage of the battery panel are instantaneous, peak voltage * peak current = peak power WP of the battery panel

When the sunlight intensity does not reach Standard test environment, voltage and current cannot reach the maximum value.

The maximum power of the battery panel and the amount of solar radiation J at the place of use determine the daily power output, and the effective charging power determines the daily power consumption

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When the daily electricity production is greater than The amount of electricity consumed each day should be the same as the line loss in the equipment, the self-consumption of the equipment, etc., so that the load can maintain a normal work every day. Otherwise, insufficient power will cause a shutdown. Of course, the amount of daily solar radiation changes with the seasonsand climate change.

< p>So the battery panel current will no longer increase when it reaches the level. maximum value determined by the intensity of sunlight and has nothing to do with charging

In addition, the standard test temperature of the battery panel is 25 degrees Celsius and the effect of temperature on power is a curve is proportional before 45 degrees and becomes inversely proportional when it exceeds 45 degrees. If the current and voltage increase, the current and voltage will generally increase. Usually, the voltage reaches the maximum value before the current.