What are the requirements for the circuit design of the battery if the power generation system of the solar street lamp is to be stable?

Because the input energy of the solar power generation system is extremely unstable, the charge and discharge control of the battery in the solar power generation system is more complicated than the charge and discharge control of the ordinary battery. The design of the charging and discharging control circuit of solar street lamps is very important. A complete and correct control circuit should have the functions of preventing reverse charging, preventing battery overcharge/discharging, and temperature compensation of lead-acid batteries. 1. The function of preventing reverse charging, generally speaking, a diode is connected in series in the solar cell circuit, and the diode prevents reverse charging; 2. The function of preventing overcharging, a bleeder transistor can be connected in series or in parallel in the input circuit, and the voltage discrimination circuit controls the transistor 3. Except for Ni-Cd batteries, other batteries generally need to have the function of preventing battery over-discharge, because battery over-discharge will Cause permanent damage, it should be noted that the solar panel generally discharges at a small rate relative to the battery, so the discharge cut-off voltage should not be too low; 4. Temperature compensation, the above-mentioned solar street lamp battery voltage control point changes with the ambient temperature, Therefore, the solar street lighting system should have a reference voltage controlled by temperature, thereby prolonging the service life of the equipment.