Power supply for a rail vehicle, having a traction battery
AssigneeSiemens Mobility GmbH
InventorsMaik Dittrich, Bernhard Höscheler
Life of this patent
Estimating the term…
Abstract
A power supply device for a rail vehicle has a traction battery, a traction intermediate circuit, an on-board network, a bidirectional charging device, which is connected between the traction battery and the on-board network, and a first switching unit between the traction battery and the traction intermediate circuit for switching between a charging operation and a discharging operation of the traction battery. There is also described a power supply provision device, a method for discharging a traction battery of a power supply device, a method for charging a traction accumulator of a power supply device, and a rail vehicle.
Claims12
1-14. (canceled)
A power supply device for a rail vehicle, comprising:
- a traction accumulator;
- a traction intermediate circuit, which is operated with an electrical voltage of 2 to 4 kV during network operation;
- an on-board electrical system;
- an auxiliary transformer between said traction intermediate circuit and said on-board electrical system;
- a bidirectional charger connected between said traction accumulator and said on-board electrical system;
- a first switch unit between said traction accumulator and said traction intermediate circuit for switching over between a charging operation and a discharging operation of said traction accumulator;
- a second switch unit between said on-board electrical system and said traction intermediate circuit, said second switch unit being configured to switch off for the discharging operation and to switch on for the charging operation by way of an external railway power supply;
- and
- an auxiliary converter between said traction intermediate circuit and said on-board electrical system, said auxiliary converter to be electrically connected to said on-board electrical system via said second switch unit.
A method of supplying power, the method comprising:
- interconnecting a bidirectional charger between a traction accumulator and an on-board electrical system of a rail vehicle;
- interconnecting an auxiliary transformer between the traction intermediate circuit, which is operated with an electrical voltage of 2 to 4 kV during network operation, and the on-board electrical system;
- providing a first switch unit between the traction accumulator and a traction intermediate circuit of the rail vehicle for switching over between a charging operation and a discharging operation of the traction accumulator;
- providing a second switch unit between the on-board electrical system and the traction intermediate circuit, wherein the second switch unit is configured to switch off for discharging operation and to switch on for a charging operation by an external railway power supply;
- and
- providing an auxiliary converter between the traction intermediate circuit and the on-board electrical system, wherein the auxiliary converter is configured to be electrically connected to the on-board electrical system via the second switch unit.
Dependencies are inferred from the claim text.