| 摘要 |
<p>1. Battery-electric road vehicle containing a separately excited direct-current motor (6) including armature-current regulators (5) and field-current regulators and an on-board battery charging device consisting of a high-level voltage controller connected in series with a low-level voltage controller and having a common capacitor (33), the high-level voltage controller and the low-level voltage controller comprising in each case at least one transistor (14 resp. 28), a choke coil (13 resp. 26) and a free-wheeling diode (31 resp. 29) and the input of the high-level voltage controller being adapted to be connected via a rectifier bridge circuit (35) to an alternating-current mains (38, 40) and the output of the low-level voltage controller being connected to the high-performance battery (1) of the vehicle, characterised by the following features : - the rectifier bridge circuit (35) can be connected via first switches (21b, 21c) to mains terminals (38, 40), the first switches (21b, 21c) being adapted to be closed as a function of the voltage amplitude (Ud ) at the common capacitor (33) of the high-level voltage controller (13, 14, 31) and the low-level voltage controller (26, 28, 29), - in the path of the positive line between the high-performance battery (1) and the output of the low-level voltage controller, a second switch (21a) is arranged which can be closed as a function of the voltage amplitude (Ud ) at the capacitor (33), - third switches (17a, 17b) are connected to the high-performance battery (1), which switches can be closed as a function of the presence of an alternating voltage at the mains terminals (38, 40), - in the path of the positive line between the third switch (17a) and the capacitor (33), a resistance (18) and a diode (20) are arranged in series, - between the output terminals of the low-level voltage controller of the on-board battery charging device, a push-pull converter (24) is connected which can be switched into circuit in vehicle operation and at the output terminals (25) of which a battery for auxiliary units is connected which has a lower voltage than that of the high-performance battery (1), - in vehicle operation, the high-level voltage controller of the on-board battery charging device is used as low-level voltage controller for the field current, in that the field winding (7) of the direct-current motor (6) is connected via fourth switches (8a, 8b), which can be closed in vehicle operation, to the positive input and output terminals of the high-level voltage controller, and - the high-performance battery (1) is connected to fifth switches (3a, 3b), which can be closed in vehicle operation, these fifth switches (3a, 3b) being connected to the armature current controller (5) with the series-connected armature of the direct-current motor (6) and, via a diode (12), to the capacitor (33).</p> |
