Cylindrical cell with contact lugs

1. A cylindrical cell comprising:

a. a cylindrical housing enclosing an interior space and composed of a first and a second metal housing part, wherein the housing comprises, at its axial ends, a first planar end face and a second planar end face connected to one another by an annular casing,

b. a positive electrode and a negative electrode, at least one of which can intercalate and/or deintercalate lithium ions, wherein the positive electrode electrically connects to the first housing part directly or via a separate electrical conductor, and the negative electrode electrically connects to the second housing part directly or via a separate electrical conductor,

c. a first contact lug configured as a sheet-metal part that is welded onto the first end face and which has a planar section extending in a plane parallel to the first end face, and

d. a second contact lug configured as a sheet-metal part that is welded onto the second end face and has a planar subsection extending in a plane parallel to the second end face and has a subsection angled away from the plane and extends as far as into the plane of the planar section, wherein the angled-away subsection comprises an expansion section in which the second contact lug expands in the main direction of extent in a targeted and predictable manner under a defined tensile loading in its main direction of extent,

wherein a length of the second contact lug in the expansion section and/or length of the at least one track or strip conductor or conductor with a round cross section exceeds the height of the cell at least by a factor of 1.1.

2. The cell according to claim 1 , wherein the angled-away subsection comprises a terminal contact section and the expansion section between the contact section and the plane of the planar subsection.

3. The cell according to claim 1 , wherein at least one of:

the second contact lug is a track or strip conductor or conductor with a round cross section in the expansion section or comprises at least one conductor in the expansion section,

the second contact lug has, in a main direction of extent, a cross section tapered in relation to the terminal contact section of the angled-away subsection and/or the planar subsection in the expansion section, and

the second contact lug or the at least one track or strip conductor or conductor with a round cross section has a non-linear, or bent profile in the expansion section.

4. The cell according to claim 1 , wherein at least one of:

the contact lug comprises at least one bent or bent-away lower section in the expansion section,

the contact lug is of S-, U- or Z-shaped design in the expansion section or comprises a lower section designed in this way within the expansion section, and

the contact lug is a wave design in the expansion section or comprises a lower section designed in this way within the expansion section.

5. The cell according to claim 1 , wherein at least one of:

the expansion section comprises two conductor tracks or two strip conductors or two conductors with a round cross section,

the two conductor tracks or the two strip conductors or the two conductors with a round cross section each have a bent profile in the expansion section,

the two conductor tracks or the two strip conductors or the two conductors with a round cross section are bent in opposite bending directions in the expansion section, and

the second contact lug is an O-shape in the expansion section or comprises a lower section designed in this way within the expansion section.

6. The cell according to claim 1 , wherein at least one of:

the first contact lug comprises a contact section that can be angled away or is angled away from the plane of the section, and

the contact section of the first contact lug points in the same direction as the contact section of the second contact lug.

7. The cell according to claim 1 , wherein at least one of:

the cell has a diameter of 5 mm to 25 mm,

the cell has a height of 3 mm to 50 mm, and

the cell is a button cell.

8. The cell according to claim 1 , wherein at least one of:

the contact lugs and consist of sheet metal with a thickness of 0.25 mm to 2.5 mm, and

the contact lugs and are manufactured as stamped parts.

9. The cell according to claim 1 , wherein at least one of:

the cell has a rupture cross, and

the rupture cross is made in the first end face or in the second end face.

10. The cell according to claim 1 , wherein at least one of:

the housing consists of two housing parts that can be displaced axially in relation to one another, and

the housing has, in the casing, a hole that can vent the interior space.

11. The cell according to claim 1 , wherein the cell is fixed on a printed circuit board via the contact sections.

12. A cylindrical cell comprising:

a. a cylindrical housing enclosing an interior space and composed of a first and a second metal housing part, wherein the housing comprises, at its axial ends, a first planar end face and a second planar end face connected to one another by an annular casing,

b. a positive electrode and a negative electrode, at least one of which can intercalate and/or deintercalate lithium ions, wherein the positive electrode electrically connects to the first housing part directly or via a separate electrical conductor, and the negative electrode electrically connects to the second housing part directly or via a separate electrical conductor,

c. a first contact lug configured as a sheet-metal part that is welded onto the first end face and which has a planar section extending in a plane parallel to the first end face, and

d. a second contact lug configured as a sheet-metal part that is welded onto the second end face and has a planar subsection extending in a plane parallel to the second end face and has a subsection angled away from the plane and extends as far as into the plane of the planar section, wherein the angled-away subsection comprises an expansion section in which the second contact lug expands in the main direction of extent in a targeted and predictable manner under a defined tensile loading in its main direction of extent,

wherein the contact lug is of S-, U- or Z-shaped design in the expansion section or comprises a lower section designed in this way within the expansion section.