Design of charge and discharge controller for solar motion sensor light manufacturer
As the interface circuit of photovoltaic cells and lead-acid batteries, the charging controller generally hopes to work at the maximum power point to achieve higher efficiency, but at the same time as the maximum power point tracking (MPPT), the battery charging needs to be considered control. At present, the main circuit topology commonly used mainly includes a buck converter, a boost converter, a Cuk converter, and the like. In general, the output voltage of photovoltaic cells fluctuates greatly, and Buck converters or Boost converters can only perform buck or boost conversion. Due to this, photovoltaic cells cannot fully operate at the maximum power point in a wide range.