Solar photovoltaic lighting to the basic requirement of the energy storage element is: ( 1) High efficiency, namely the charge and discharge efficiency is higher; ( 2) Charge and discharge curve to flat as far as possible, in order to improve the efficiency of solar cells. Make solar battery can work as far as possible in the maximum power output
solar photovoltaic lighting are basic requirements for energy storage element: ( 1) High efficiency, namely the charge and discharge efficiency is higher; ( 2) Charge and discharge curve to flat as far as possible, in order to improve the efficiency of solar cells. Make solar battery can work in near the maximum power output as far as possible; ( 3) Long service life; ( 4) Good temperature characteristic, LED lights, can in - 20℃- 70 ℃ under the condition of normal work. ( 5) High cost performance. ( 6) Do not pollute the environment