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

Claim 17:
18. An electric vehicle having a high-voltage battery, comprising a charging device for charging the high-voltage battery at a charging station outputting a DC charging voltage between first and second charging terminals, wherein a nominal battery voltage is provided between first and second battery terminals of the high-voltage battery, the charging device comprising:
first and second power input terminals being electrically connectable to the respective first and second charging terminals of the charging station, wherein the first power input terminal is connected to the first battery terminal, and the second power input terminal is connected to the second battery terminal,
a unidirectional power transfer component interconnected in series between the second power input terminal and the second battery terminal, the power transfer component being configured to only allow unidirectional power flow to the second battery terminal of the high-voltage battery, and
an electronic control unit configured to control a semiconductor device to selectively pre-charge the second power input terminal to a predetermined pre-charge voltage using a controllably limited pre-charge current supplied by electric power from the high-voltage battery after electrical contact has been established between the first and second power input terminals and the respective first and second charging terminals of the charging station, and before electric power is transferred from the charging station to the high-voltage battery
wherein the semiconductor device comprises a transistor being operated in its linear operation mode to control the pre-charge current.