Patent ID: 9399401
Filing Date: 2016-07-26
CPC Classification: B60L,H02J,Y02T

Claim Text:
1. A battery charging apparatus for an electric vehicle, the battery charging apparatus comprising: a first converter part configured to convert a first voltage into a second voltage, the first voltage inputted with rectification; and a second converter part configured to output a third voltage for charging a battery for the electric vehicle by converting the second voltage into a direct current, wherein an output end of the first converter part comprises a first output terminal and a second output terminal, the second converter part comprises a first switching element having one end thereof connected with the first output terminal; a second switching element having one end thereof connected with the second output terminal; a first output capacitor having one end thereof serially connected with the other end of the first switching element; and a second output capacitor having one end thereof serially connected with the other end of the second switching element, the first converter part includes a switching part having the first voltage inputted thereto, the switching part includes a third switching element, a fourth switching element a fifth switching element, and a sixth switching element, the first switching element and the second switching element are turned on/off, and a time during which the first switching element is turned on does not overlap a time during which the second switching element is turned on, an on/off cycle of the first switching element and an on/off cycle of the second switching element are identical as a first cycle, and a starting point of the first switching element being turned on differs from a starting point of the second switching element being turned on by ½ of the first cycle, a duration of the first switching element and the second switching element being turned on within the first cycle is shorter than or equal to a duration of the first switching element and the second switching element being turned off, a duration of the third switching element, the fourth switching element, the fifth switching element, and the sixth switching element being turned on within the second cycle is equal to a duration of being turned off, the first cycle is twice as long as the second cycle, and a starting point of the first switching element being turned on is identical to a starting point of the third switching element and the sixth switching element being turned on.