With the advance and development of the human society,modern petroleum energy isgetting rarer and rarer.Both the goal of domestic energy saving and emission reduction and the declaration on the international G20 Summitmean that humans start to review our own living environment.The development and use of solar energy has become a global hot topic of study nowadays.As the science and technology is getting more and more mature,solar power has been widely applied in economy,military,industry and agriculture and other fields and has achieved great results and prominent benefits in terms of industry and agriculture.Solar power has become an emerging industry which develops rapidly and vigorously.Its applied fields are also expanding.The need for portable solar energybased power supply is becoming bigger and bigger ,its battery has many advantages such as stable light and electricity conversion efficiency,zero pollution,long operating life and wide application etc.
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