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 checking the reliability of the quality of system components. What are the protection modes of its solar controller? 1: Direct charging protection point voltage Direct charging is also called emergency 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 also the voltage of the 'overcharge protection point'. The battery terminal voltage cannot be higher than this protection point during charging, otherwise it will cause overcharging and damage the battery. 2: After the direct charging of the voltage at the equalizing control point, the battery will generally be left for a period of time by the charging and discharging controller to let its voltage drop naturally. When it falls to the 'recovery voltage' value, it will enter the equalizing state. Equalizing charge, also known as 'equalizing charge'. The equalizing time should not be too long, generally a few minutes to ten minutes. If the time is set too long, it will be harmful. For a small system with one or two batteries, equalizing is not very meaningful. so. The
solar street light controller generally does not have equalization, only two stages. 3: The voltage of the floating charge control point is generally after the equalizing charge is completed, the battery is also left for a period of time, so that the terminal voltage falls naturally, and when it falls to the maintenance voltage 'point, it enters the floating charge state. It is similar to small current charging. , when the battery voltage is low, charge a little, and when it is low, charge a little, one by one, to prevent the battery temperature from rising continuously, 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 safety reasons, the voltage of the 12V battery over-discharge protection point is generally artificially added 0.3v as 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 protection point voltage of the 24V system is 22.20V.
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