Mando Corporation

Sung Min Oh

Hyung Tae Moon

Tae Kyung Moon

Sun Min Hwang

Jin Hwan Lee

Gun Haeng Heo

A battery charging apparatus includes a converting unit, first and second charging units and a switching unit. The converting unit separately convert AC power into a first voltage and a second voltage. The first charging unit drops the converted first voltage and charge a high voltage battery with the dropped first voltage. The second charging unit drops the converted second voltage or a third voltage of the high voltage battery, and charges an auxiliary battery with the dropped second or third voltage. The switching unit performs, in a first mode, the charging of the high voltage battery and the auxiliary battery by the AC power, and in a second mode, stops the charging of the high voltage battery by the AC power and performs the charging of the auxiliary battery by the third voltage.

Apparatus for charging both main battery and auxiliary battery using the same primary winding and two different secondary windings of single transformer

Disclosed herein is a charger for electric vehicles, which has a wide output voltage range. The charger is a slow charger having an improved configuration to respond to a wide output voltage range as well as output change. The charger may achieve limited switching loss and reduced noise via soft-switching operation, thereby enabling high-efficiency large-power Power Factor Correction (PFC) and increasing conversion efficiency of a DC/DC converter.

Growing community of inventors

Gyeonggi-do, South Korea

Sung Min Oh