1. Solar cell array
The smallest unit used for photoelectric conversion is a solar cell
monomer. Its size is 4-100cm2, working voltage is 0.45-0.50V, and working
current is 20-25mA/cm2, so it cannot be used as a separate power source. In
photovoltaic power generation systems, it is necessary to connect solar cells in
series, parallel, and package them to form solar cell modules. Its power can
range from a few watts to several hundred watts and can be used as a separate
power source. A solar cell array is a type of photovoltaic power generation
system that connects solar cell modules in series, parallel, and mounted on a
bracket. It can output power of several hundred watts, several thousand watts,
or even greater.
2. Solar battery
Independent photovoltaic power generation systems rely on batteries to
store excess electricity, so batteries play an important role in independent
photovoltaic power generation systems. At present, there are many types of
batteries commonly used in photovoltaic systems, among which the most widely
used are ordinary lead-acid batteries, alkaline nickel chromium batteries, and
lead-acid maintenance free batteries.
As the selling price of solar cell modules decreases, the proportion of
battery costs in the total system investment will gradually increase. Therefore,
in system design, selecting the appropriate type of battery, determining the
appropriate battery capacity, accurately implementing installation, operation,
and careful maintenance are crucial for the normal operation of independent
solar photovoltaic power generation systems.
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