Electrochemical cell and apparatus containing the cell

Patent metadata

Field	Value
Publication number	US-10930899-B2
Application number	US-201716320644-A
Country	US
Kind code	B2
Filing date	Jul 18, 2017
Priority date	Jul 26, 2016
Publication date	Feb 23, 2021
Grant date	Feb 23, 2021

Abstract

An electrochemical cell includes an annular electrode composite body; and an annular liquid-tight housing formed as a hollow cylinder and including an annular interior space, wherein the housing is arranged around a central aperture or recess, the housing has a height of 5 mm to 40 mm and an external diameter of 6 mm to 20 mm, and the annular electrode composite body is arranged in the annular interior space.

First claim

What is claimed is:

1. An electrochemical cell comprising:
an annular electrode composite body; and
an annular liquid-tight housing formed as a hollow cylinder and comprising an annular interior space, wherein
the housing is arranged around a central aperture or recess,
the housing has a height of 5 mm to 40 mm and an external diameter of 6 mm to 20 mm,
the annular electrode composite body is arranged in the annular interior space, and
the housing comprises two circularly annular housing bases spaced apart from each other and parallel to each other and an annular inner housing shell connecting the housing bases and an annular outer housing shell connecting the housing bases, wherein each of the housing shells and each of the housing bases has an inner side pointing into the interior space and an outer side pointing in an opposite direction.

2. The cell as claimed in claim 1 , further comprising at least one of:
the housing has at least two sealing regions separated physically from each other, and
the at least two sealing regions are each formed annularly.

3. The cell as claimed in claim 1 , further comprising at least one of:
the central aperture or recess has a cylindrical geometry, and
the electrode composite body is present as a hollow cylindrical coil made of electrode strips and at least one separator strip, end faces of which are formed by longitudinal edges of the electrode strips and in a center of which there is an axially aligned hollow space with openings in the center of the end faces.

4. The cell as claimed in claim 3 , further comprising one of:
the housing comprises two hollow cylindrical rings of different diameters in a concentric arrangement of which the smaller forms the inner housing shell and the larger forms the outer housing shell, and
the housing comprises two annular sleeves each made of an annular disk and a hollow cylindrical ring, wherein one of the hollow cylindrical rings is pushed into the other so that the annular disks form mutually parallel housing bases and the hollow cylindrical rings pushed into each other form the inner housing shell.

5. An apparatus comprising:
the cell according to claim 1 , and
at least one electronic component arranged in the central aperture or the recess, wherein
the electronic component is supplied with electrical energy by the cell.

6. An electrochemical cell comprising:
an annular electrode composite body; and
an annular liquid-tight housing formed as a hollow cylinder and comprising an annular interior space, wherein
the housing is arranged around a central aperture or recess,
the housing has a height of 5 mm to 40 mm and an external diameter of 6 mm to 20 mm,
the annular electrode composite body is arranged in the annular interior space, and
the housing comprises two beaker-like half sections each made of an annular disk, a hollow cylindrical inner ring and a hollow cylindrical outer ring, wherein one of the half sections is pushed into the other so that the annular disks form the mutually parallel housing bases, and the inner rings form the inner housing shell and the outer rings form the outer housing shell.

7. The cell as claimed in claim 6 , further comprising at least one of:
the central aperture or recess has a cylindrical geometry, and
the electrode composite body is present as a hollow cylindrical coil made of electrode strips and at least one separator strip, end faces of which are formed by longitudinal edges of the electrode strips and in a center of which there is an axially aligned hollow space with openings in the center of the end faces.

Assignees

• Varta Microbattery Gmbh

Inventors

• Kreidler Bernd
• Kilibarda Goran
• Hald Rainer
• Gaugler Winfried
• Fischer Claus-Christian
• Ernsperger Jürgen
• Brenner Rolf

Classifications

• H01M10/0427 Primary

  Button cells · CPC title

• H01M50/109 Primary

  of button or coin shape · CPC title

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• H01M10/0431

  Cells with wound or folded electrodes (H01M10/045 takes precedence) · CPC title

• H01M2220/30

  Batteries in portable systems, e.g. mobile phone, laptop · CPC title