Patent ID: 11945321
Assignee: VOLKSWAGEN AKTIENGESELLSCHAFT
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H  Y | IPC B  F  H

Claim 0:
1. A method for charging an electric drive of a vehicle, comprising:
activating an emergency drive mode condition of the vehicle via a low-voltage on-board electrical system, if (i) a defective high-voltage battery, or (ii) a switched-off high-voltage battery, is detected;
transmitting electrical power from the low-voltage on-board electrical system of the vehicle to a high-voltage battery under the emergency drive mode condition;
receiving further electrical power from a separate external unit via a low-voltage interface to the low-voltage on-board electrical system of the vehicle during the emergency drive mode condition; and
transmitting the further electrical power from the low-voltage on-board electrical system to the high-voltage battery to facilitate start-up of the vehicle.