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The components of solar street lamps are mainly composed of solar panels, solar street lamps , and light sources. Because solar street lights are installed outdoors, maintenance is especially important, especially batteries.
Battery maintenance is mainly two prevention and one control
Two prevention: prevent over-discharge and prevent over-charge
Over-discharge: The deeper the over-discharge depth, the shorter the number of charge-discharge cycles, that is, the shorter the service life, because over-discharge will increase the internal pressure of the battery, causing the positive and negative active materials to be reversibly damaged and the electrolyte decomposed. Lithium deposition of the negative electrode, the resistance will also increase, even if the charge can only partially recover, its capacity will be significantly reduced, and even directly scrapped.
Overcharge: Overcharge is the battery charge current is greater than the battery acceptable current, this overcharge will be converted into heat and the battery temperature will rise, so long it is easy to cause "thermal runaway", so that the battery capacity is drastically reduced and deformed. There are hidden dangers of explosion and burning, so it is necessary to prevent the battery from being overcharged, provide the voltage value of charging in strict accordance with the regulations, and do overcharge protection.
A control refers to controlling the ambient temperature of the battery.
Whether the ambient temperature is too high or too low will affect the battery capacity and shorten its service life. First, it is better to choose a lithium battery instead of a gel battery in terms of battery selection. Whether the lithium battery is cold or heat resistant. The performance is even better.
If the battery is buried underground, it should be buried deeper, at least 40 cm, on the one hand, it can reduce the temperature effect, on the other hand, it can prevent flooding and avoid the impact of water on the battery.
Solar street light battery maintenance must pay special attention, over-discharge is not desirable, the same, overcharge is not enough, we must pay attention to the two prevention and control of solar street light battery.