The electric vehicle charger is a charging device specially configured for the battery of the electric bicycle! The classification of the charger: It can be distinguished with and without a power frequency (50 Hz) transformer, which can be divided into two categories. Freight three-wheel chargers generally use chargers with power frequency transformers, which are bulky, heavy, and electricity-consuming, but reliable and cheap; electric bicycles and electric motorcycles use so-called switching power supply chargers, which save electricity and are efficient, but Perishable.
The correct operation of the switching power supply charger is: when charging, first insert the battery, then add the mains; when it is full, first cut off the mains, and then unplug the battery. If you pull the battery plug first when charging, especially when the charging current is high (red light), it is very easy to damage the charger.
Commonly used switching power supply chargers are divided into two categories: half-bridge and single-excited, and single-excited are divided into forward and flyback. The half-bridge type has high cost and good performance, and is often used in chargers with negative pulses; the single-excitation type has low cost and high market share.