DC-DC CONVERTER FOR BATTERY SYSTEM WITH WIDE OPERATING VOLTAGE RANGE

摘要

Direct current to direct current (DC-DC) voltage converter apparatuses and methods are provided for a wide voltage range battery cell and operations thereof. The apparatus comprises a first node coupled with a first pole of a battery cell and electrically connected with a first pole of a load device. A second node is coupled with a second pole of the battery cell. A third node electrically connects with a second pole of the load device. A DC-DC voltage converter circuit comprises a primary circuit tied to the first and second nodes, a secondary circuit including a direct conduction path for electrical current to pass from the second to third node, and a galvanically isolated energy transfer path between the primary circuit and the secondary circuit. A voltage output from the secondary circuit adds to (or subtracts from) the battery cell voltage at the second node.