Several fast methods for solar street light controller to charge accumulator

1. Pulse charging method The pulse charging method is to first charge the battery with pulse current, and then let the battery stop charging for a period of time before continuing to charge, so that the battery is fully charged in this cycle, and the oxygen and the oxygen generated by the chemical reaction of the battery during the intermittent period The hydrogen has time to recombine and be absorbed, so that the concentration polarization and ohmic polarization are naturally eliminated, thereby reducing the internal pressure of the battery assembly, so that the next round of constant current charging can proceed smoothly, so that the battery can absorb More power. Intermittent charging makes the battery have a sufficient reaction time, reduces the amount of gassing, and improves the acceptance rate of the battery to the charging current; 　　2, the variable current intermittent charging method The variable current intermittent charging method is a voltage-limiting variable current intermittent charging method, charging Each stage of the early stage adopts variable current intermittent charging, so that the battery can obtain most of the charging capacity. In the later stage of charging, the constant voltage charging stage is used to obtain the overcharge capacity; 　　3. The difference between the variable voltage intermittent charging method and the variable current intermittent charging method is The first stage uses intermittent constant current instead of intermittent constant voltage. During each constant voltage charging stage, the charging current naturally decreases exponentially, which conforms to the characteristic that the acceptable rate of battery current decreases gradually as the charging progresses; 　　4 、Variable voltage and current wave type intermittent positive and negative zero pulse fast charging method pulse current amplitude and PWM signal frequency are fixed, PWM duty cycle is adjustable, on this basis, the intermittent stop charging stage can be added, which can be used in a shorter time More power is charged into the battery to improve the charge acceptance of the battery. Regardless of whether the conventional charging method or the fast charging method is used, it is to improve the performance and service life of the battery, so as to ensure the normal lighting of the solar street lamp, which controller control method to choose, or to make a reasonable choice based on the actual lighting requirements and the installation area conditions .