Now domestic installation of solar street light failure rate is very high, it made a tremendous obstacles for the promotion of solar energy street lamp, its failure mainly has two points, one is light damage, is a short service life of battery, solar road
now domestic installation of solar street light [ Solar street light is a crystalline silicon solar battery power supply, valve control type sealed and maintenance-free battery ( Gel battery) Store electricity, super bright LED as light source, lamps and lanterns and controlled by the intelligent charging and discharging controller, is used to instead of the traditional public power lighting lamps. 】 Failure rate is very high, which made a tremendous obstacles for the promotion of solar street lamp, its failure mainly has two points, one is light damage, is a short service life of battery, the battery solar street lamps 【 Solar street light battery is a battery in the application of solar street lights, solar street light battery is used to produce solar cell components of electricity storage, when light is insufficient or another new energy street lamp, night lighting. 。 。 】 The cause of the short service life have? Battery used in a solar system at present is mainly maintenance-free lead-acid battery' The greatest characteristic of maintenance-free lead-acid batteries, just as its name implies is 'free maintenance. 】 , when in use, in addition to the environment temperature, there are two important indicators: (1) (2) the discharge voltage of charging pressure values. In solar lighting system, overcharge time is not much and easy to control, and from the annual average 【 。 。 。 】 To calculate, are often under charge, all kinds of brand battery technology index of discharge voltage is essentially 10. 5V( With 12 v battery' Battery is a kind of chemical energy directly into electrical energy device, is designed according to the rechargeable batteries, rechargeable by reversible chemical reactions, usually is refers to the lead-acid battery, it is one of the battery, belongs to the secondary battery. 】 As an example) , but it is put to full fill full set, namely to 0. 1 c discharge rate to measure, and the discharge rate of solar lighting system is in commonly 0. About 025 c, like this small current discharge rate, poor in rizhao, under the condition of insufficient battery charging, such as winter or rainy day in a row, will run out of battery power, appear serious irreversible damage phenomenon, greatly shorten the service life of battery.