Battery cell and components thereof

1 . An apparatus, comprising:

a current collector foil, comprising:

a coated area having an electrode coating; and

an uncoated area having an embossed pattern including a first row of first features comprising protrusions disposed along a first axis parallel to a boundary between the coated area and the uncoated area, a second row of second features comprising depressions disposed along a second axis parallel to the boundary between the coated area and the uncoated area, and a third row of features comprising alternating protrusions and depressions (1) disposed between the first row and the second row and (2) aligned along a third axis parallel to the boundary between the coated area and the uncoated area, each of the protrusions and the depressions positioned in the uncoated area having a depth in a range of 1 μm to 1500 μm and a width in a range of 0.1 mm to 10 mm.

2 . The apparatus of claim 1 , comprising:

at least a portion of the embossed pattern includes a non-linear pattern disposed on the uncoated area to cover at least a portion of a wrinkle of the uncoated area.

3 . The apparatus of claim 1 , wherein the embossed pattern increases a mechanical strength of at least a portion of the current collector foil.

4 . The apparatus of claim 1 , wherein the coated area is a first coated area, comprising:

the embossed pattern includes a non-linear pattern disposed between the first coated area and a second coated area.

5 . The apparatus of claim 1 , comprising:

the embossed pattern disposed along an axis parallel to a boundary of the coated area.

6 . The apparatus of claim 1 , wherein the current collector foil includes a first surface, comprising:

the coated area covering a first portion of the first surface, and the uncoated area including a second portion of the first surface.

7 . The apparatus of claim 1 , further comprising:

an electrode comprising an insulation layer on an active material layer.

8 . A method, comprising:

providing a current collector foil;

coating an area of the current collector foil with an electrode coating;

embossing a non-linear embossed pattern onto an area of the current collector foil without the electrode coating, wherein the area of the current collector foil without the electrode coating includes a first row of first features comprising protrusions disposed along a first axis parallel to a boundary between the coated area and the area of the current collector foil without the electrode coating, a second row of second features comprising depressions disposed along a second axis parallel to the boundary between the coated area and the area of the current collector foil without the electrode coating, and a third row of features comprising alternating protrusions and depressions (1) disposed between the first row and the second row and (2) aligned along a third axis parallel to the boundary between the coated area and the area of the current collector foil without the electrode coating, each of the protrusions and the depressions positioned in the area of the current collector foil without the electrode coating having a depth in a range of 1 μm to 1500 μm and a width in a range of 0.1 mm to 10 mm; and

applying pressure to the electrode coating.

9 . The method of claim 8 , comprising:

forming an electrode tab from the current collector foil without the electrode coating.

10 . The method of claim 8 , comprising:

forming an electrode from an electrode tab and the current collector foil with the electrode coating.

11 . The method of claim 8 , comprising:

disposing at least a portion of the non-linear embossed pattern onto the area of the current collector foil without the electrode coating to cover at least a portion of a wrinkle of the current collector foil.

12 . The method of claim 8 , comprising:

increasing a mechanical strength of at least a portion of the current collector foil.

13 . The method of claim 8 , wherein the area of the current collector foil with the electrode coating is a first area, the method comprising:

coating a second area of the current collector foil with the electrode coating; and

disposing the non-linear embossed pattern between the first area and the second area.

14 . The method of claim 8 , comprising:

disposing the non-linear embossed pattern along an axis parallel to a boundary of the area of the current collector foil with the electrode coating.

15 . A battery, comprising:

a current collector foil, comprising:

a coated area comprising an electrode coating; and

an uncoated area comprising tabs having an embossed pattern including a first row of first features comprising protrusions disposed along a first axis parallel to a boundary between the coated area and the uncoated area, a second row of second features comprising depressions disposed along a second axis parallel to the boundary between the coated area and the uncoated area, and a third row of features comprising alternating protrusions and depressions (1) disposed between the first row and the second row and (2) aligned along a third axis parallel to the boundary between the coated area and the uncoated area, each of the protrusions and the depressions positioned in the uncoated area having a depth in a range of 1 μm to 1500 μm and a width in a range of 0.1 mm to 10 mm.

16 . The apparatus of claim 1 , wherein the protrusions and depressions positioned in the uncoated area have different depths.

17 . A system, comprising:

the apparatus of claim 1 ; and

an optical element configured to:

detect the embossed pattern; and

use the embossed pattern to locate at least one of an edge of the coated area or an edge of the uncoated area.

18 . The system of claim 17 , wherein the optical element comprises at least one of: a camera, a vision system, a scanner, or a combination thereof.

19 . The apparatus of claim 1 , wherein the coated area is not embossed.

20 . The apparatus of claim 1 , wherein the first row of first features comprises only protrusions and the second row of second features comprises only depressions.