TECHNOLOGY AND TREND OF HIGH FREQUENCY BATTERY CHARGER FOR LEAD-ACID BATTERY

Though battery use increases more and more and the capacity is increased as a result of short battery use time, research and development is in progress with the purpose of reducing the charging time and increasing the charging speed due to the physical limitations and the limitations on technology development. High speed chargers and high frequency battery chargers used with AC power utilize two conversion circuit designing methods, and the efficiency and performance of chargers have been enhanced by using additional PFC, filter, safety circuit, etc. If a lead-acid battery is charged with a slow charger for general battery, sulfuric acid accumulates as a by-product of the chemical reaction, which leads to battery performance deterioration. In order to charge such a battery turning it into the state of initial performance, a charger which employs high frequency wave is used to prevent performance deterioration. As it is also important to check the battery state at this time to ensure quick charging and prevent performance deterioration, we intend to look into various methods of checking the battery state, changes in the charger efficiency, and the difference between a high frequency battery charger and a general slow battery charger