Control device of solar street lamp

Abstract

The invention discloses a control device of a solar street lamp, which comprises a high frequency oscillatory circuit, a push-pull output circuit, a step-up transformer, a rectification filter circuit, a short-circuit protection circuit and a relay. The input end of the high frequency oscillatory circuit is connected with the output end of a solar storage battery through a normally closed contact of the relay, the output end of the high frequency oscillatory circuit is connected with the input end of the push-pull output circuit, the output end of the push-pull output circuit is connected with a primary winding of the step-up transformer, a secondary winding of the step-up transformer is connected with the input end of the rectification filter circuit, and the output end of the rectification filter circuit is connected with the electrical input end of the solar street lamp. A center tap of the primary winding of the step-up transformer, two coil input ends of the relay and a movable contact of the relay are respectively connected with the output end of the solar storage battery, the short-circuit protection circuit is connected between the output end of the rectification filter circuit and a normally open contact of the relay. Selection range of light sources of the solar street lamp is greatly broadened after the control device is adopted.

Description

technical field [0001] The invention relates to the field of solar street lamps, in particular to a control device for solar street lamps. Background technique [0002] Solar street lights are usually powered by energy storage devices, such as batteries, for their light sources. Batteries all work in direct current, and their working voltage is not high. If they are used to directly light the light source on the street lamp, they can only use low-voltage light sources, such as low-voltage energy-saving lamps of 12V and 24V. However, since low-voltage energy-saving lamps are improved on the basis of ordinary 220-volt energy-saving lamps, if low-voltage energy-saving lamps are used, it will inevitably lead to large changes in battery voltage, and the lamp tube will work in a forced start state for a long time, which will cause the lamp tube to be damaged. Low luminous efficiency and shortened lifespan. To solve this problem, there is another solution, that is, to use an inve...

AI Technical Summary

Problems solved by technology

However, due to the low efficiency of inverters in the prior art and the high failure rate in outdoor use, it is not conducive to popularization and application.

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