Zf Friedrichshafen Ag

Matthias Engicht

Frank Seemann

Martin Mach

Gabriel Scherer

Andre Ehrsam

Zbynek Stepan

Vladimir Dvorak

Tato Gervais Amani

Zbynek Štepán

A device for providing operating energy for an auxiliary drive for an electric vehicle. The device has a battery interface and an inverter, which is designed to convert, for a boost function, a direct voltage into an alternating voltage. The device also has a switch apparatus, which includes: —a switch terminal, which connects the switch apparatus to the inverter; —an auxiliary interface for connecting the device to the auxiliary drive; and —a charging interface for feeding electrical energy into the device. The switch apparatus is designed to connect the charging interface to the switch terminal and to the auxiliary interface by a switching signal.

Device and method for providing operating energy for an auxiliary drive for an electric vehicle, and electric vehicle

A network of an electric vehicle has an energy supply interface, an inverter, an energization interface and a soft starter. The inverter has a first inverter connection configured to connect the inverter to the energy supply interface and a second inverter connection configured to connect the inverter to the energization interface and the soft starter. The inverter is configured to convert a DC voltage applied to the first inverter connection to an AC voltage and to supply same at the second inverter connection. The soft starter is configured to reduce an input voltage applied to the first soft starter connection and to supply the operating voltage, which is reduced compared to the input voltage, at the second soft starter connection.

Network for supplying an operating voltage for an electric vehicle, electric vehicle and method for supplying an operating voltage

Apparatus () for providing an operating energy () for an auxiliary drive () for an electric vehicle (). The apparatus () has a battery interface () for connecting the apparatus () to a vehicle battery (), a bidirectional inverter () having a first terminal for connecting the inverter () to the battery interface () and a second terminal. The inverter () is formed to convert a DC voltage into an AC voltage and back. A switch with a terminal which the switch to the second terminal, to an auxiliary interface () for connecting the apparatus () to the auxiliary drive () and to a charge interface () for feeding electrical energy () into the apparatus (). The switch connects the charge interface to the switch and to the auxiliary interface (). The apparatus () has a control device for providing the boost signal and the charge signal.

Device for providing an operating power for an auxiliary drive for an electric vehicle and method for converting an operating voltage

An apparatus for increasing an input voltage for an electric vehicle has an energy supply interface to a vehicle battery, a DC-DC converter and an inverter. The DC-DC converter has a first connection for connection to the energy supply interface and a second connection for connection to the inverter. The DC-DC converter is designed to supply an output voltage at the second connection in response to an amplifier signal, the output voltage being increased with respect to an input voltage applied to the first connection. The inverter has an inverter connection for connecting the inverter to the second connection and has at least one energization interface for energizing at least one unit coupled to the energization interface, the inverter converts a DC voltage applied to the inverter connection to an AC voltage and to supply same to the energization interface.

Growing community of inventors

Markdorf, Germany

Matthias Engicht