BATTERY CELL HAVING A JACKET

• US 20120156542A1
• Filed: 01/19/2010
• Published: 06/21/2012
• Est. Priority Date: 01/23/2009
• Status: Abandoned Application

• Current Assignee: Li-Tec Battery GmbH (Mercedes-Benz Group AG)
• Original Assignee: Li-Tec Battery GmbH (Mercedes-Benz Group AG)
• Inventors: Schaefer, Tim, Gutsch, Andreas
• Application Number:
  US13/145,727
• Publication Number:
  US 20120156542A1
• Time in Patent Office: Days
• US Class Current: 429/120
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/647 Prismatic or flat cells, e.g. pouch cells
• CPC Class Codes: H01M 10/651 characterised by parameters specified by a numeric value or mathematical formula, e.g. ratios, sizes or concentrations
• CPC Class Codes: H01M 10/654 located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes
• CPC Class Codes: H01M 10/6554 Rods or plates
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

The invention relates to a battery cell (1) particularly of a prismatic or cylindrical design, comprising at least two electrode stacks (2), at least one current conductor connected to an electrode stack (2), a jacket (4) that at least partially encloses the electrode stack (2), at least one current conductor (3) extending partially out of the jacket (4), characterized in that a heat conducting plate (5) is arranged between two electrode stacks (2).

Claims

1. A battery cell (1) with an, in particular, prismatic or cylindrical shape, comprising:

at least two electrode stacks (2),

at least one current conductor (3) which is connected to an electrode stack (2),

a jacket (4) which at least partially encloses the electrode stacks (2), wherein at least one current conductor (3) partially extends out of the jacket (4),

wherein

a heat conducting plate (5) is disposed between two electrode stacks (2).

2. The battery cell (1) according to claim 1,

wherein

the heat conducting plate (5) is produced from a fibre composite or from a combination of fibre composites and the heat conducting plate (5) comprises an opening (3).

4. The battery cell (1) according to claim 2,

wherein

a contact element (7) is disposed in the opening (13) and an insulator (8) is disposed in an annular space (12) between the contact element (7) and the heat conducting plate (5).

6. The battery cell (1) according to claim 4,

wherein

a first electrode stack (2) is connected to a first side of the contact element (7) and a second electrode stack (2) is connected to a second side of the contact element (7).

7. The battery cell (1) according to claim 6,

wherein

viewed in cross-section, the contact element (7) has a width (B1) which is greater than the cross-sectional thickness (B2) of the heat conducting plate (5).

8. The battery cell (1) according to claim 7,

wherein

viewed in cross-section, the insulator (8) has a width (B3) which is greater than a cross-sectional thickness (B2) of the heat conducting plate (5).

9. The battery cell (1) according to claim 8,

wherein

in cross-section, the contact element (7) has a width (B1) which is greater than a width (B3) of the insulator (8) and the jacket (4) is produced from a film.

11. The battery cell (1) according to claim 9,

wherein

the jacket (4) is produced from a composite, in particular a composite film and the jacket (4) comprises at least one formed part (11).

13. The battery cell (1) according to claim 11,

wherein

the formed part (11) is constituted dimensionally stable by means of deep drawing.

14. The battery cell (1) according to claim 13,

wherein

the heat conducting plate (5) penetrates the jacket (4).

15. The battery cell (1) according to claim 14,

wherein

the heat conducting plate (5) comprises a heat transfer region (18) which is disposed outside the jacket (4) and the jacket (4) is connected in a firmly bonded manner to the heat conducting plate (5).

17. The battery cell (1) according to claim 15,

wherein

the jacket (4) comprises an opening (6) through which a current conductor (3) is passed, wherein a sealing strip (9) is disposed between the current conductor (3) and the jacket (4).

18. The battery cell (1) according to claim 17,

wherein

two electrode stacks (2) are provided, wherein a current conductor (3) of each of the electrode stacks (2) extends out of the jacket (4).

19. The battery cell (1) according to claim 18,

wherein

a further current conductor (3) of an electrode stack (2) is connected to the contact element (7).

20. The battery cell (1) according to claim 19,

wherein

two electrode stacks (2) are connected in series.

21. The battery cell (1) according to claim 20,

wherein

two electrode stacks (2) are connected in parallel.

22. The battery cell (1) according to claim 21,

wherein

electrode stacks (2) are connected to one another electrically inside the jacket (4).

23. The battery cell (1) according to claim 22,

wherein

at least one current conductor (3) is connected in a firmly bonded manner to the contact element (7), in particular by means of laser welding or ultrasonic welding.

24. The battery cell (1) according to claim 23,

wherein

electrodes (16) are connected in an electrically conductive manner to a current conductor (3).

26. A battery arrangement comprising a plurality of battery cells (1) according to claim 1,

wherein

a battery cell (1) is held in the battery arrangement by its heat conducting plate (5) and the battery cell (1) is screwed to a housing of the battery arrangement by its heat conducting plate (5).

28. The battery cell (1) according to claim 26,

wherein

a section of the heat conducting plate (5) of at least one battery cell (1) is received in a guide groove of a housing.

3. (canceled)

5. (canceled)

10. (canceled)

12. (canceled)

16. (canceled)

25. (canceled)

27. (canceled)

29-30. -30. (canceled)