Abstract
For a continuous energy supply of photovoltaic operated and off-grid
loads, the storage of the solar generated electrical energy is necessary.
About 60% of all over the world manufactured solar cells are used
for such stand alone systems. In case of photovoltaic systems, mainly
electrochemical battery storage systems are used. The paper describes
the requirements for batteries in solar systems. The most important
storage systems, such as leadâacid, NiMH and Li-ion batteries are
described in detail and further developing trends are discussed.
As it is well known that the operation conditions strongly influence
the battery lifetime, this paper reviews photovoltaic operation conditions
and experience in performance and lifetime in photovoltaic systems.
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