On-board loader and method for charging a high-voltage battery of a high-voltage electrical system or a low-voltage battery of a low-voltage electrical system

摘要

The invention relates to an on-board charger (1) for charging a high-voltage battery (2) of a high-voltage electrical system or a low-voltage battery (3) of a low-voltage electrical system - a line filter (4) for filtering an alternating voltage (U _AC ), - a power factor correction filter (5) for adapting an input current, - A first DC converter (6), which has a transformer (8) with a primary side (9) and a secondary side (10), with the first DC converter (6) the high-voltage battery (2) via a first connection of the secondary side (10) the first DC voltage converter (6) can be supplied with a first DC voltage (U1), - A DC voltage filter (14) comprising a second connection of the secondary side (10) of the first DC-DC converter (6), with which the low-voltage battery (3) can be supplied with a second DC voltage (U2), - A control unit (16) for activating either the first circuit or the second circuit of the secondary side (10) of the first DC / DC converter (6).