The protection mode of solar street lights
The solar controller can not only quickly collect the current working status of the photovoltaic system in real time, obtain working information at any time, but also accumulate historical data in detail, which provides an accurate and sufficient basis for testing the reliability of the quality of the system components. What are the protection modes of the solar controller?
1: Direct charge protection point voltage
Direct charging is also called rapid charging, which belongs to fast charging. Generally, the battery is charged with high current and relatively high voltage when the battery voltage is low. However, there is a control point, also called a protection point.
The voltage of the direct charge protection point is generally the "overcharge protection point" voltage, and the battery terminal voltage cannot be higher than this protection point during charging, otherwise it will cause overcharge and damage the battery.
2: Voltage of equalizing charge control point
After the direct charge is over, the battery will generally be allowed to stand still for a period of time by the charge and discharge controller to allow its voltage to drop naturally. When it drops to the "recovery voltage" value, it will enter the equalized charge state.
Equalizing charge, that is, "equalizing charge". The equalization time should not be too long, generally a few minutes to ten minutes, setting the time too long is harmful. For a small system equipped with a two-cell battery, equal charging is of little significance. so. Solar street light controllers generally do not have equal charging, and only have two stages.
3: Floating charge control point voltage
Generally, after the equalization is completed, the battery is also left to stand for a period of time, so that its terminal voltage naturally drops. When it drops to the maintenance voltage point, it enters the floating charge state. It is similar to low current charging, and the battery voltage is low when the battery voltage is low. At the last point, charge a little as soon as it is low, so that the battery temperature will not continue to rise, which is very good for the battery.
4: Over-discharge baoh protection termination voltage
The battery discharge cannot be lower than the specified value of the national standard. Although battery manufacturers also have their own protection parameters, they must eventually move closer to the national standard. For the sake of safety, the over-discharge protection point voltage of the 12V battery is generally added to 0.3v as the temperature compensation or the zero-point drift correction of the control circuit, so that the over-discharge protection point voltage of the 12V battery is: 11.10v, then the over-discharge of the 24V system The protection point voltage is 22.20V.
Benwei Solar Street Lights Outdoor Lamp
Product Features:
>LED light, solar panel, lithium battery and controller,all in one compact design.
>No wiring,100% solar powered ,easy to install and ship.
>Built-in infrared sensor,can adjust the light output automatically(time control + light sensor control+ motion sensor control).
>Rust-proof, dustproof and waterproof IP65.
>5 years warranty.
