As we know, solar street light is an important energy source of solar energy, so it is environmentally friendly in street light, because it is the sunlight in the daytime on the solar cell, the light energy into electrical energy stored in the battery, and then the battery in the evening for the street light LED(light emitting diode) supply power. Below, solar street lamp skills for you to analyze the important maintenance mode of solar street lamp:
I. Direct charge maintenance point voltage:
Direct charge is also called emergency charge, belongs to rapid charging, individual is in the battery voltage is low when the high current with absolute high voltage battery charging, however, there is a control point, also called maintenance point. Direct charge maintenance point voltage is also individual; Overcharge maintenance point; Voltage, charging battery terminal voltage can not be higher than the maintenance point, otherwise it will cause overcharging, is harmful to the battery.
Two, uniform charge control point voltage:
After the end of direct charge, the battery will be charged and discharged controller static for a period of time, so that the voltage natural fall, fall; Recovery voltage; Value, it enters equalized charging state. The wiring on the back of the solar panel is reverse buckle design, which can be gently pried open with a screwdriver. The wiring of the solar panel (red cap is connected to the positive pole line, black cap is connected to the negative pole line) corresponding to the positive and negative pole line separated from the black cap of the lithium integrated battery, and the wiring should be wrapped with electrical tape. Equalizing charge, that is; Balanced charging; . Even charging time should not be too long, individually how many minutes ~ 10 minutes, time setting too long is harmful. For a small system with one or two batteries, equalization is not meaningful. So. Solar street lamp controller individual no uniform charge, only two stages.
Three, floating charge control point voltage:
Individual is equalized charge after the end of the battery is also static for a period of time, so that the end voltage naturally falling, when falling to the maintenance voltage; Point, into the floating charge condition. Similar to small current charging, battery voltage is low on the charge of a point, a low on the charge of a point, a wave by wave, lest the battery temperature rise continuously, which is very beneficial for the battery.
Four, overdischarge maintenance termination voltage:
The battery discharge shall not be lower than the national standard. It is true that battery manufacturers also have their own maintenance parameters, but eventually to the NATIONAL standard together.
In order to be safe, the individual 12V battery overdischarge maintenance point voltage artificially added 0.3V as temperature compensation or control circuit zero drift correction, so 12V battery overdischarge maintenance point voltage is: 11.10V, then 24V system overdischarge maintenance point voltage is 22.20V. The wiring on the back of the solar panel is reverse buckle design, which can be gently pried open with a screwdriver. The wiring of the solar panel (red cap is connected to the positive pole line, black cap is connected to the negative pole line) corresponding to the positive and negative pole line separated from the black cap of the lithium integrated battery, and the wiring should be wrapped with electrical tape. Solar street lamp LED lamp head wire lithium control battery white cap separated, wiring attention to use electrical tape wrap.
