Electrode foil wrinkle remover band

1 . A system for manufacturing electrodes, the system comprising:

a top roll press;

a bottom roll press separated from the top roll press by a gap, the gap comprising a distance selected to accommodate a current collector, the current collector comprising a bare portion and a coated portion having thereon an active electrode material of a first thickness; and

a wrinkle remover band comprising a second thickness selected, based on the first thickness, to evenly distribute stress across the bare portion and the coated portion of the current collector during a calendering process for forming a pressed electrode;

wherein the second thickness of the wrinkle remover band is tapered;

wherein the wrinkle remover band is positioned over a top surface of the bare portion of the current collector and the second thickness of the wrinkle remover band comprises a positive taper that increases towards an edge of the current collector.

2 . The system of claim 1 , further comprising at least one of a band guide roll and a tensioning roll configured to align the wrinkle remover band with the bare portion of the current collector.

3 . The system of claim 2 , further comprising a servo system coupled to at least one of the band guide roll and the tensioning roll, the servo system comprising a servo motor and one or more rollers configured to reposition the wrinkle remover band to maintain alignment with the bare portion of the current collector.

4 . The system of claim 1 , wherein the wrinkle remover band comprises a top wrinkle remover band positioned over a top surface of the bare portion of the current collector.

5 . The system of claim 1 , wherein the wrinkle remover band comprises a bottom wrinkle remover band positioned over a bottom surface of the bare portion of the current collector.

6 . The system of claim 1 , wherein the wrinkle remover band comprises one of a top wrinkle remover band positioned over a top surface of the bare portion of the current collector and a bottom wrinkle remover band positioned over a bottom surface of the bare portion of the current collector, and the system further comprises a second wrinkle remover band comprising the other of the top wrinkle remover band and the bottom wrinkle remover band.

7 . A system for manufacturing electrodes, the system comprising:

a top roll press;

a bottom roll press separated from the top roll press by a gap, the gap comprising a distance selected to accommodate a current collector, the current collector comprising a bare portion and a coated portion having thereon an active electrode material of a first thickness; and

a wrinkle remover band comprising a second thickness selected, based on the first thickness, to evenly distribute stress across the bare portion and the coated portion of the current collector during a calendering process for forming a pressed electrode;

wherein the second thickness of the wrinkle remover band is tapered;

wherein the wrinkle remover band is positioned over a bottom surface of the bare portion of the current collector and the second thickness of the wrinkle remover band comprises a positive taper that increases towards an edge of the current collector.

8 . The system of claim 1 , wherein the wrinkle remover band is configured as multiple separate bands positioned across the bare portion of the current collector for lane coating applications.

9 . A method comprising:

providing a top roll press;

providing a bottom roll press separated from the top roll press by a gap, the gap comprising a distance selected to accommodate a current collector, the current collector comprising a bare portion and a coated portion having thereon an active electrode material of a first thickness; and

providing a wrinkle remover band comprising a second thickness selected, based on the first thickness, to evenly distribute stress across the bare portion and the coated portion of the current collector during a calendering process for forming a pressed electrode;

wherein the second thickness of the wrinkle remover band is tapered;

wherein the wrinkle remover band is positioned over a top surface of the bare portion of the current collector and the second thickness of the wrinkle remover band comprises a positive taper that increases towards an edge of the current collector.

10 . The method of claim 9 , further comprising providing at least one of a band guide roll and a tensioning roll configured to align the wrinkle remover band with the bare portion of the current collector.

11 . The method of claim 10 , further comprising providing a servo system coupled to at least one of the band guide roll and the tensioning roll, the servo system comprising a servo motor and one or more rollers configured to reposition the wrinkle remover band to maintain alignment with the bare portion of the current collector.

12 . The method of claim 9 , wherein the wrinkle remover band comprises a top wrinkle remover band positioned over a top surface of the bare portion of the current collector.

13 . The method of claim 9 , wherein the wrinkle remover band comprises a bottom wrinkle remover band positioned over a bottom surface of the bare portion of the current collector.

14 . The method of claim 9 , wherein the wrinkle remover band comprises one of a top wrinkle remover band positioned over a top surface of the bare portion of the current collector and a bottom wrinkle remover band positioned over a bottom surface of the bare portion of the current collector, and the method further includes providing a second wrinkle remover band comprising the other of the top wrinkle remover band and the bottom wrinkle remover band.

15 . The method of claim 9 , wherein the wrinkle remover band is configured as multiple separate bands positioned across the bare portion of the current collector for lane coating applications.