Therefore, 1W below the low-power solar lawn light, in the absence of high life requirements of the case, you can use the form of Dijiao packaging, for the use of the provisions of the solar energy, the proposed use of laminated packaging. In addition, there is a silicone gel for Dijiao packaging solar cells, said the working life can reach 10 years. 2.4 solar cell installation tilt angle selection and decorative cover For the sake of a lot of solar lighting factory will be the level of solar cells placed in this case, the solar cell output power will be reduced by 15% to 20%, if the solar energy The battery above the addition of a decorative cover, solar cell output power will be reduced by about 5%, solar cells are expensive, we collected a lot of foreign solar lights information, between the beautiful and energy saving, most of them choose energy. In the lower reaches of the Yangtze River solar cell the best tilt angle is about 40 degrees, the direction is the south. 2.5 heat island effect Single-chip solar cells are generally can not be used, the practical application of solar modules. The solar cell module is made up of a combination of multiple solar cells to achieve the desired voltage. In the course of use, if a solar cell is individually blocked, such as foliage, etc., the solar cells, which are individually blocked, are damaged by heat in the presence of strong sunlight, and the entire solar cell module is damaged. This is the so-called heat island effect. In order to prevent the heat island effect, the solar cell is generally inclined to place, so that leaves can not be attached, while the installation of anti-bird button on the solar cell components. 3 solar lighting in the battery charge and discharge control Whether the size of solar lighting, a good performance charge and discharge control circuit is essential. In order to extend the life of the battery, it must be its charge and discharge conditions to be restricted to prevent the battery overcharge and deep discharge.In addition, due to the solar photovoltaic power generation system input energy is extremely unstable, photovoltaic power generation system to control the battery charge Than the ordinary battery charging control to be more complicated. For the design of solar lamps, success and failure often depends on the charge and discharge control circuit success and failure. There is not a good performance of the charge and discharge control circuit, it is impossible to have a good performance of solar lamps. 3.1 anti-charge control
To prevent the anti-charging function, in general, is in the solar cell circuit in series with a diode, diode to prevent anti-charging, the diode should be Schottky diodes, Schottky diode voltage drop lower than ordinary diodes. In addition, the field effect transistor can also be used to prevent the anti-charging function