| 摘要 |
The invention relates to a method for monitoring the charging mode of an energy store (7) in a vehicle that can be driven by means of an electric machine (1). The electric machine (1) is connected to the energy store (7) by means of a vehicle electrical system (8) and in the driving mode can be supplied with electrical energy from the energy store (7). The energy store (7) is connected to an external energy supply grid (17) in the charging mode via a charging circuit (15) comprising a unit (1, 2) operated as a step-up converter, a controllable rectifier (9) having filter capacitors (13a-13c) connected upstream, and a line filter (14). An intermediate circuit capacitor (C) is connected in parallel to the energy store (7). During the charging mode, at least one current and/or one voltage is monitored at the input, at the output, and/or within the charging circuit (15), and/or a function of a control unit (5, 12) of the rectifier (9) and/or the unit (1, 2) operated as a step-up converter is monitored. If the at least one current exceeds a prescribed current threshold or the at least one voltage exceeds a prescribed voltage threshold, or if a malfunction of the control unit (5, 12) of the rectifier (9) and/or the unit (1, 2) operated as a step-up unit is detected, then the charging circuit (15) is switched to a neutral mode in which a branch of the controllable rectifier (9) and all circuit elements (3d-3f) that can be controlled in step-up mode of the unit (1, 2) operated as a step-up converter are bypassed. |
