| 摘要 |
Device and method for charging a traction battery of an electric or hybrid vehicle. The invention relates to a device (1) for charging a traction battery (2) of an electric or hybrid vehicle, comprising at least one traction battery (2), an electric motor (4) with inductors (L1-L3) which have a common connection (8), and a power converter (3), wherein the power converter (3) is arranged between the traction battery (2) and the electric motor (4) and has a positive terminal (6) and a negative terminal (7), wherein the power converter (3) converts, for a motor operating mode, a direct voltage of the traction battery (2) into at least one alternating voltage for the electric motor (4) and, for a generator mode, converts at least one alternating voltage of the electric motor (4) into a direct voltage for the traction battery (2), wherein the device (1) has terminals (9, 10) for connecting a rectifier (5), wherein the rectifier (5) has an alternating voltage connection side (11) for connection to a single-phase or multiphase external alternating voltage network and a direct voltage connection side (12) having at least one positive terminal (13) and one negative terminal (14), wherein at least one terminal (13, 14) on the direct voltage connection side (12) can be connected to the common terminal (8) of the inductors (L1-L3), wherein a switching element (21) is provided by means of which, in the charging mode, a pole (16, 17) of the traction battery (3) is connected by the terminal (10, 9) to the rectifier (5) with opposing polarity, and to the common terminal (8) of the inductors (L1-L3), wherein the other terminal (9, 10) is connected to the rectifier (5) with the appropriate sign by a terminal (6, 7) of the power converter (3) and said invention also relates to a method for charging a traction battery (2) of an electric or hybrid vehicle. |
