System and method of controlling charge of vehicle battery
AssigneesHyundai Motor Company, Kia Corporation
InventorsDae Woo Lee, Jae Eun Cha, Byung Gu Kang, Tae Jong Ha
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Abstract
A method of controlling charge of a vehicle battery includes: determining, by a control unit, whether a high voltage battery and a low voltage battery are charged in a first charging mode, a second charging mode, or a third charging mode; and charging at least one of the high voltage battery or the low voltage battery by controlling a first full-bridge circuit unit, a second full-bridge circuit unit, and a low voltage direct current (DC) converter unit based on the determined first, second or third charging mode.
Claims3
A method of controlling charge of a vehicle battery, the method comprising:
- determining, by a control unit, whether a high voltage battery and a low voltage battery are charged in a first charging mode, a second charging mode, or a third charging mode;
- charging at least one of the high voltage battery or the low voltage battery by controlling a first full-bridge circuit unit, a second full-bridge circuit unit, and a low voltage direct current (DC) converter unit based on the determined first, second or third charging mode;
- when the first charging mode is determined, controlling, by the control unit, a switching frequency of first to eighth switching elements;
- activating, by the control unit, the first to eighth switching elements to charge the high voltage battery;
- and
- charging the low voltage battery by turning on a ninth switching element to smooth a voltage which is full-wave rectified by a rectifying unit through a second capacitor and controlling a switching frequency of a tenth switching element to vary the smoothed voltage.
A method of controlling charge of a vehicle battery, the method comprising:
- determining, by a control unit, whether a high voltage battery and a low voltage battery are charged in a first charging mode, a second charging mode, or a third charging mode;
- charging at least one of the high voltage battery or the low voltage battery by controlling a first full-bridge circuit unit, a second full-bridge circuit unit, and a low voltage direct current (DC) converter unit based on the determined first, second or third charging mode;
- when the second charging mode is determined,
- controlling, by the control unit, a switching frequency of first to eighth switching elements;
- activating the first to eighth switching elements to charge the high voltage battery;
- and
- turning off a ninth switching element and a tenth switching element.
A method of controlling charge of a vehicle battery, the method comprising:
- determining, by a control unit, whether a high voltage battery and a low voltage battery are charged in a first charging mode, a second charging mode, or a third charging mode;
- charging at least one of the high voltage battery or the low voltage battery by controlling a first full-bridge circuit unit, a second full-bridge circuit unit, and a low voltage direct current (DC) converter unit based on the determined first, second or third charging mode;
- when the third charging mode is determined,
- inactivating, by the control unit, first to fourth switching elements;
- controlling a switching frequency of fifth to eighth switching elements;
- converting a DC power input from the high voltage battery into alternating current (AC) power;
- outputting the AC power to a second output terminal;
- and
- charging the low voltage battery with power input from the high voltage battery by turning off a ninth switching element and turning on a tenth switching element.
Dependencies are inferred from the claim text.