Patent ID: 11945326
Assignee: PREH GMBA
Field: Transport (Mechanical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 0:
1. A method for charging a high-voltage battery of an electric vehicle, comprising:
providing the high-voltage battery having a nominal battery voltage between first and second battery terminals,
providing a charging station outputting a DC charging voltage between first and second charging terminals,
electrically connecting the first and second charging terminals and the respective first and second battery terminals without electric power being transferred from the charging station to the high-voltage battery, wherein the second charging terminal is connected to the second battery terminal via a unidirectional power transfer component interposed therebetween only allowing unidirectional power flow from the second charging terminal to the second battery terminal,
selectively pre-charging the second charging terminal to a predetermined pre-charge voltage using a controllably limited pre-charge current supplied by electric power from the high-voltage battery, and
transferring electric power from the charging station to the high-voltage battery after the predetermined pre-charge voltage has been attained at the second charging terminal of the charging station,
wherein the pre-charge current is controlled by operating a transistor in its linear operation mode.