Battery charging is a complex electrochemical process, in which the discharged electric energy is replenished from the electric power grid. This is accomplished using a battery charger, which is an electrical/electronic device that converts the incoming AC line voltage into a regulated DC voltage to meet the charging needs of the respective battery. In a series of articles we are going to explain this to you.

While various battery charging technologies can be employed, new high frequency battery chargers are making headways into the industrial battery charger market due to their higher efficiencies and smaller sizes and weights as compared to ferroresonant and SCR type chargers.

A typical high frequency battery charger incorporates a front-end AC-DC rectifier to generate an unregulated DC input voltage, a high frequency (HF) power converter that converts input DC input into a high frequency AC voltage, a high frequency isolation transformer to provide output isolation, as well as voltage step-down function, and an output rectifier and filtering stage to generate a smooth, very low ripple output DC voltage (Fig. 2).

Unlike ferro resonant and SCR type chargers, the output voltage and current of the high frequency charger of Fig. 2 is almost a pure DC with negligible AC ripple, thus matching the characteristics and needs of industrial batteries. Ferro and SCR chargers exhibit high AC output voltage and current ripple resulting in additional heating of the battery.

If you have any requirements or any kind of query regarding the battery charger solutions, feel free to communicate with our dedicated team at any time at marketing@everexceed.com.