Samsung Electronics Co., Ltd.

Mae-Jin Park

Sang-Kyu Park

Seo-Young Park

Disclosed is a contactless battery charger that avoids contact failure between a battery pack and the battery charger including a converter and a charging unit. A converter includes a primary side of a printed circuit board (PCB) transformer. The converter converts a commercial electric power to a high-frequency square wave, applies the converted high-frequency square wave to the primary side of the PCB transformer, and controls generation of a charge current depending on charge state information provided. A charging unit includes a secondary side of the PCB transformer. The charging unit converts to a DC voltage an electromotive force induced at the secondary side of the PCB transformer by a magnetic field generated by the square wave applied to the primary side of the PCB transformer, charges a rechargeable battery with the DC voltage, and provides the charge state information to the converter.

Growing community of inventors

Seoul, South Korea

Mae-Jin Park