Energy storage device

• US 9,004,208 B2
• Filed: 05/19/2010
• Issued: 04/14/2015
• Est. Priority Date: 06/30/2009
• Status: Active Grant

• Current Assignee: FEV GmbH
• Original Assignee: FEV GmbH
• Inventors: Seibert, David, Bockstette, Jens, Skundric, Dragan, Rosekeit, Martin
• Primary Examiner(s): Walters, John
• Assistant Examiner(s): TRIGGS, JAMES J
• Application Number:
  US13/381,396
• Publication Number:
  US 20120181954A1
• Time in Patent Office: 1,791 Days
• Field of Search: 180/54.1, 180 651- 6531, 180/69.6, 320/104, 320/134, 320/135, 903/903
• US Class Current: 180/65.29
• CPC Class Codes: B60K 1/04 of the electric storage means for propulsion exchanging batteries for electric propulsion of vehicles B60L53/80; for auxiliary purposes only B60R16/04; supplying batteries to, or removing batteries from, vehicles B60S5/06
• CPC Class Codes: B60K 2001/005 the electric storage means
• CPC Class Codes: B60K 6/28 characterised by the electric energy storing means, e.g. batteries or capacitors
• CPC Class Codes: B60L 50/40 using propulsion power supplied by capacitors
• CPC Class Codes: B60L 50/60 using power supplied by batteries in combination with fuel cells B60L50/75
• CPC Class Codes: B60L 53/80 Exchanging energy storage elements, e.g. removable batteries
• CPC Class Codes: B60L 58/20 having different nominal voltages
• CPC Class Codes: B60L 58/26 by cooling
• CPC Class Codes: B60Y 2400/114 Super-capacities
• CPC Class Codes: H02J 7/1423 with multiple batteries
• CPC Class Codes: H02J 7/345 using capacitors as storage or buffering devices
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

Abstract

Energy storage device for storing electric energy for the partial or complete electrical drive of a vehicle, wherein the device has energy storages and power storages, a drive unit of a vehicle with an energy storage device as well as method for operating an energy storage device.

Claims

1. An energy storage device (3) for storing electric energy for a partial or complete electric drive of a vehicle, comprising:

energy storages (1) and power storages (2), wherein an internal resistance of the energy storages is larger than an internal resistance of the power storages, and

a current regulator (4) which limits a current flowing between the energy storages and the power storages, wherein the current flow is controlled by the current regulator (4) in dependency of a current strength.

2. The energy storage device according to claim 1,

characterised in

that the current regulator (4) is controlled by a control (13) such, that the current flow remains within a tolerance band (9).

3. The energy storage device according to claim 1,

characterised by

a cooling (5), wherein the power storages (2) are cooled and the energy storages (1) are not cooled.

4. The energy storage device according to claim 1,

characterised in

that the energy storages (1) take up more installation space than the power storages (2).

5. The energy storage device according to claim 1,

characterised in

that the energy storages and the power storages are constructed in a modular manner.

6. The energy storage device according to claim 1,

characterised in

that the energy storages (1) and the power storages (2) are arranged spatially separated.

7. The energy storage device according to claim 1, further comprising a drive unit, wherein at least one electric machine (12) is provided as a motor (11) or as a generator (11).

8. The energy storage device of claim 7,

characterised in

that the current flows from the energy storages (1) via the current regulator (4) to the electric machine (12).

9. The energy storage device of claim 7,

characterised in

that the current flows from the power storages (2) directly to the electric machine (12).

10. A method for operating an energy storage device (3) with energy storages (1) and power storages (2), comprising:

a current flow between the power storages (2) and the energy storages (1) is limited by means of a current regulator (4) and the current flow is limited such, that it remains within a tolerance band (9) and that a cooling of the energy storages (1) is not necessary.

11. The method according to claim 10,

characterised in

that the power storages (2) are cooled.

12. The method according to claim 10,

characterised in

that the current regulator (4) is controlled by a control (13) such, that the current flow remains within the tolerance band (9).

13. The method according to claim 10,

characterised in

that the current flow is controlled by the current regulator (4) in dependency of a current strength.

14. The method according to claim 10,

characterised by

a cooling (5), wherein the power storages (2) are cooled and the energy storages (1) are not cooled.

15. The method according to claim 10,

characterized in

that the energy storages (1) take up more installation space than the power storages (2).

16. The method according to claim 10,

characterised in

that the energy storages and the power storages are constructed in a modular manner.

17. The method according to claim 10,

characterised in

that the energy storages (1) and the power storages (2) are arranged spatially separated.

18. The method according to claim 10,

further comprising

a drive unit and at least one electric machine (12) provided as a motor (11) or as a generator (11), the current flowing from the energy storages (1) via the current regulator (4) to the electric machine (12).

19. An energy storage device (3) for storing electric energy for a partial or complete electric drive of a vehicle, comprising:

energy storages (1) and power storages (2), wherein an internal resistance of the energy storages is larger than an internal resistance of the power storages,

a current regulator (4) which limits a current flowing between the energy storages and the power storages,

a drive unit, and

at least one electric machine (12) provided as a motor (11) or as a generator (11), wherein the current flows from the energy storages (1) via the current regulator (4) to the electric machine (12).

20. The energy storage device according to claim 19,

characterised in

that the current regulator (4) is controlled by a control (13) such, that the current flow remains within a tolerance band (9).

21. The energy storage device according to claim 19,

characterised in

that the current flow is controlled by the current regulator (4) in dependency of a current strength.

22. The energy storage device according to claim 19,

characterised by

a cooling (5), wherein the power storages (2) are cooled and the energy storages (1) are not cooled.

23. The energy storage device according to claim 19,

characterised in

that the energy storages (1) take up more installation space than the power storages (2).

24. The energy storage device according to claim 19,

characterised in

that the energy storages and the power storages are constructed in a modular manner.

25. The energy storage device according to claim 19,

characterised in

that the energy storages (1) and the power storages (2) are arranged spatially separated.