Sealed cell having a multilayer case

• US 6,146,785 A
• Filed: 10/15/1998
• Issued: 11/14/2000
• Est. Priority Date: 10/16/1997
• Status: Expired due to Fees

• Current Assignee: Alcatel SA (Nokia Corporation)
• Original Assignee: Alcatel SA (Nokia Corporation)
• Inventors: Rigobert, Gerard, Souliac, Laurent
• Primary Examiner(s): Maples, John S.
• Application Number:
  US09/172,863
• Time in Patent Office: 761 Days
• Field of Search: 429/159, 429/94, 429/177, 180/68.5
• US Class Current: 429/94
• CPC Class Codes: H01M 10/0431 Cells with wound or folded electrodes H01M10/045 takes precedence
• CPC Class Codes: H01M 50/119 Metals
• CPC Class Codes: H01M 50/121 Organic material
• CPC Class Codes: H01M 50/124 having a layered structure
• CPC Class Codes: H01M 50/133 Thickness
• CPC Class Codes: H01M 50/213 adapted for cells having curved cross-section, e.g. round or elliptic H01M50/209, H01M50/216 take precedence
• CPC Class Codes: H01M 50/538 Connection of several leads or tabs of wound or folded electrode stacks
• CPC Class Codes: H01M 6/10 with wound or folded electrodes
• 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 provides a sealed organic-electrolyte cell. A spiral-wound group of electrodes have at least one alternation of negative electrode, separator and positive electrode. The cell has an enclosure made up of a cover and an end wall interconnected in a sealed manner by a side case surrounding the group. Each cover and end wall has a respective current outlet terminal and a central core around which the electrode group is spiral-wound, with an end wall and the cover being fixed to the ends thereof. The case surrounding the group is made of a combined metal-and-plastics multilayer material of a thickness that is smaller than 0.5 mm. The invention also provides a module of such cells and a battery that has at least one such module. The battery is suitable for use as the battery of an electric vehicle.

Claims

1. A sealed organic-electrolyte cell comprising:

a spiral-wound group of electrodes comprising at least one alternation of negative electrode, separator, and positive electrode;

said cell including;

an enclosure made up of a cover and an end wall interconnected in sealed manner by a side case surrounding said group, each of said cover and said end wall having a respective current outlet terminal; and

a center core around which the electrode group is spiral-wound with the end wall and the cover being respectively fixed to opposite ends of the central core;

and the case surrounding said group is made of a combined metal-and-plastics multilayer material of thickness that is smaller than 0.5 mm.

2. A cell according to claim 1, in which the case surrounding said group is made of a combined metal-and-plastics multilayer layer of thickness lying in the range 0.1 mm to below 0.5 mm.

3. A cell according to claim 1, in which said multilayer material of the case surrounding the group is a two-layer material.

4. A cell according to claim 1, in which at least one of the following parts:

the cover and the end wall;

is made of a combined metal and plastic multilayer material of thickness lying in the range 0.5 mm to 3 mm.

5. A cell according to claim 4, in which said part and the case are assembled together by heat-sealing.

6. A cell according to claim 4, in which the multilayer material of said part is a two-layer material.

7. A cell according to claim 1, in which at least one of the following parts:

the cover and the end wall;

is made of a metal material of thickness lying in the range 0.5 mm to 3 mm.

8. A module of cells, the module comprising a one-piece container having compartments each housing said cell of claim 1, said cells being interconnected in series and/or in parallel.

9. A battery comprising at least one module according to claim 8.

10. A vehicle having propulsion means powered by an energy source comprising at least one battery according to claim 9.