Scania Cv Ab

Siemens Aktiengesellschaft

Siemens Mobility Gmbh

Christer Thoren

Frank Gerstenberg

Florian Buehs

Klaus Dietrich

Goeran Saenger

Henrik Engdahl

Michael Lehmann

Thomas Stark

Hans-Peter Lang

Helge Molthan

Johan Lindstroem

Holger Sommer

Hasso Georg Gruenjes

A vehicle has a current collector for feeding traction energy from a two-pole overhead contact line system, an electric or hybrid electric traction drive, and an electric energy storage device for temporarily storing fed traction energy. A first line branch can connect the traction drive to the current collector. A second line branch, which can connect the traction drive and the energy storage device to the current collector, includes a switched-in, galvanically isolating DC-to-DC converter. Due to a third line branch which can connect the traction drive and the energy storage device to the current collector, and which includes a switched-in, non-galvanically isolating DC-to-DC converter, enables higher charging rates for charging the energy storage device to be transmitted while maintaining the protection system.

Vehicle with current collector

A vehicle has an electric or hybrid-electric traction drive supported by an ungrounded vehicle frame. The vehicle also has a current collector, which can be electrically connected to the traction drive and which can be brought in galvanic contact with a contact line of a grounded contact-line system to supply traction energy. The vehicle contains an electrical protection system for avoiding dangerous contact voltages on the vehicle frame or on a vehicle part connected to the vehicle frame in a conductive manner. The protection system has a first protection stage, a second protection stage, and a switching element, by which the protection system can be switched between the first and the second protection stages. The first protection stage provides greater safety from dangerous contact voltages than the second protection stage. Thus, a protection system can be provided which provides sufficient safety in all operating states of the vehicle.

Protection device for a vehicle for preventing contact voltages

Growing community of inventors

Haegersten, Sweden

Christer Thoren