Energy Supply System

• US 20120187769A1
• Filed: 06/08/2010
• Published: 07/26/2012
• Est. Priority Date: 07/24/2009
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Fassnacht, Jochen, Heusel, Jochen, Spannhake, Stefan
• Application Number:
  US13/384,908
• Publication Number:
  US 20120187769A1
• Time in Patent Office: Days
• US Class Current: 307/82
• CPC Class Codes: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: H02J 7/0019 using switched or multiplexed charge circuits
• CPC Class Codes: H02M 1/0077 Plural converter units whose outputs are connected in series
• CPC Class Codes: H02M 3/158 including plural semiconductor devices as final control devices for a single load
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

An energy supply system has a number of DC choppers for converting the input voltages applied in each case into output voltages, and a number of energy storages for providing the input voltages, an energy storage being assigned to each DC chopper. An output voltage of at least one of the number of DC choppers is settable as a function of a setpoint input in order to expose the energy storage assigned to the at least one DC chopper to a load individually.

Claims

1-12. -12. (canceled)

13. An energy supply system, comprising:

a plurality of DC choppers each converting an applied input voltage into an output voltage; and

a plurality of energy storages for providing the input voltages to the DC choppers, wherein each energy storage is assigned to a corresponding single DC chopper;

wherein an output voltage of at least one of the plurality of DC choppers is set as a function of a setpoint input in order to expose the at least one energy storage assigned to the at least one DC chopper to a load individually.

14. The energy supply system as recited in claim 13, wherein the output voltages of the plurality of DC choppers are each set according to an assigned setpoint input in order to expose the energy storages to a load individually under the same current load of the DC choppers.

15. The energy supply system as recited in claim 13, wherein the DC choppers are connected in series.

16. The energy supply system as recited in claim 14, wherein the DC choppers have different nominal outputs.

17. The energy supply system as recited in claim 14, wherein the output voltages of the plurality of DC choppers are each set according to one of a DC-chopper-specific setpoint input or an energy-storage-specific setpoint input.

18. The energy supply system as recited in claim 14, wherein the output voltages of the plurality of DC chopper are set under the condition that a sum of the output voltages of all of the DC choppers is constant.

19. The energy supply system as recited in claim 14, wherein the setpoint input is one of:

(i) DC-chopper-specific;

(ii) energy-storage-specific;

or

(iii) dependent on at least one of (1) a sum of the output voltages of the plurality of DC choppers, (2) a setpoint output of the energy storage assigned to the at least one DC chopper, (3) a total output of the plurality of energy storages, and (4) a ratio between the setpoint output of the energy storage assigned to the at least one DC chopper and the total output of the plurality of energy storages.

20. The energy supply system as recited in claim 14, wherein the output voltage U_{zkmodXsetpoint} of the at least one DC chopper is set according to the relationship

U_{zkmodXsetpoint}=U_zk*(P_ModX/P_total)

where U_zk denotes a sum of the output voltages of the plurality of DC choppers, P_total denotes a total output of the plurality of energy storages, and _PModX denotes a setpoint output of the energy storage assigned to the at least one DC chopper.

21. The energy supply system as recited in claim 14, wherein the DC choppers are one of step-down converters or step-up converters.

22. A method for supplying electrical energy, comprising:

providing an energy supply system including a plurality of DC choppers each converting an applied input voltage into an output voltage, and a plurality of energy storages for providing the input voltages to the DC choppers, wherein each energy storage is assigned to a corresponding single DC chopper; and

setting an output voltage of at least one of the plurality of DC choppers as a function of a setpoint input in order to expose the at least one energy storage assigned to the at least one DC chopper to a load individually.

23. The method as recited in claim 22, wherein the output voltages of the plurality of DC choppers are each set according to one of a DC-chopper-specific setpoint input or an energy-storage-specific setpoint input.

24. The method as recited in claim 23, wherein the electrical energy is supplied in one of electric vehicles or hybrid vehicles.