ENERGY STORAGE MODULE AND POWER TOOL COMPRISING AT LEAST ONE ENERGY STORAGE MODULE

• US 20110042117A1
• Filed: 12/04/2008
• Published: 02/24/2011
• Est. Priority Date: 04/21/2008
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Doege, Volker, Glauning, Rainer, Liebenow, Cornelius
• Application Number:
  US12/736,600
• Publication Number:
  US 20110042117A1
• Time in Patent Office: Days
• US Class Current: 173/217
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 50/121 Organic material
• CPC Class Codes: H01M 50/136 Flexibility or foldability
• CPC Class Codes: H01M 50/143 Fireproof; Explosion-proof
• CPC Class Codes: H01M 50/211 adapted for pouch cells
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

The invention is based on an energy storage module, in particular a battery pack for supplying power to a power tool. According to the invention, a plurality of cells are interconnected electrically for energy storage. It is proposed that the cells are electrochemical storage cells having a flexible cell casing that is dimensionally unstable. The invention further relates to a power tool having at least one such energy storage module.

Claims

1-9. -9. (canceled)

10. An energy storage module, embodied as a battery pack for supplying power to a power tool, the energy module comprising a plurality of cells for energy storage that are electrically connected to one another, the cells being electrochemical storage cells with a flexible casing that is intrinsically dimensionally unstable.

11. The energy storage module as recited in claim 10, wherein the cells are arranged in stacks and connected in series, in parallel, or in a combination of series and parallel circuits.

12. The energy storage module as recited in claim 10, wherein the cells are polymer cells, in particular lithium ion polymer cells or lithium polymer cells.

13. The energy storage module as recited in claim 11, wherein the cells are polymer cells, in particular lithium ion polymer cells or lithium polymer cells.

14. The energy storage module as recited in claim 10, wherein the cells are arranged individually or in groups in a hard, preferably block-shaped cell container, or in an open casing.

15. The energy storage module as recited in claim 11, wherein the cells are arranged individually or in groups in a hard, preferably block-shaped cell container, or in an open casing.

16. The energy storage module as recited in claim 12, wherein the cells are arranged individually or in groups in a hard, preferably block-shaped cell container, or in an open casing.

17. The energy storage module as recited in claim 14, wherein the cell container is at least partially composed of an in particular flame-retardant, heat-resistant plastic.

18. The energy storage module as recited in claim 15, wherein the cell container is at least partially composed of an in particular flame-retardant, heat-resistant plastic.

19. The energy storage module as recited in claim 16, wherein the cell container is at least partially composed of an in particular flame-retardant, heat-resistant plastic.

20. The energy storage module as recited in claim 14, wherein the cell container has at least one overpressure protection device, embodied as a pressure relief valve and/or a predetermined breaking point.

21. The energy storage module as recited in claim 17, wherein the cell container has at least one overpressure protection device, embodied as a pressure relief valve and/or a predetermined breaking point.

22. The energy storage module as recited in claim 14, wherein the cell container has at least one electrical/electronic protection device, embodied as a temperature sensor and/or a current-interruption device, preferably a fuse.

23. The energy storage module as recited in claim 17, wherein the cell container has at least one electrical/electronic protection device, embodied as a temperature sensor and/or a current-interruption device, preferably a fuse.

24. The energy storage module as recited in claim 20, wherein the cell container has at least one electrical/electronic protection device, embodied as a temperature sensor and/or a current-interruption device, preferably a fuse.

25. The energy storage module as recited in claim 14, wherein the cell container has at least one electrical/electronic protection device and at least one overpressure protection device that functionally cooperate with each other.

26. The energy storage module as recited in claim 17, wherein the cell container has at least one electrical/electronic protection device and at least one overpressure protection device that functionally cooperate with each other.

27. The energy storage module as recited in claim 20, wherein the cell container has at least one electrical/electronic protection device and at least one overpressure protection device that functionally cooperate with each other.

28. The energy storage module as recited in claim 22, wherein the cell container has at least one electrical/electronic protection device and at least one overpressure protection device that functionally cooperate with each other.

29. A power tool having at least one energy storage module, embodied as a battery pack for supplying power to a power tool, the energy storage module being equipped with a plurality of cells that are electrically connected to one another, in particular as recited in claim 10, wherein the cells are electrochemical storage cells with a flexible casing that is intrinsically dimensionally unstable.