Back to results
US 12,347,844 B2Granted
Electrode rolling apparatus comprising non-coating portion pressing part and electrode rolling method using the same
AssigneeLG Energy Solution, Ltd.
InventorsJung Eun Lee, Hwan Han Kim, Jeong Soo Seol, Jaehyuk Choi, Soohyung Hong
Life of this patent
Estimating the term…
Abstract
An electrode rolling apparatus including a non-coating portion pressing part for rolling a non-coating portion of an electrode substrate and an electrode rolling method using the same, making it is possible to prevent a swell from occurring in the non-coating portion region in the process of rolling the electrode substrate and enhance the manufacturing process efficiency.
Claims14
An electrode rolling apparatus comprising:
- an apparatus adapted for rolling an electrode substrate including a current collector layer and an electrode composite layer formed on one side or both sides of the current collector layer,
- a non-coating portion pressing part including a pair of non-coating portion rolling rollers including a structure with surface unevenness for pressing a non-coating portion region of the electrode substrate to apply an unevenness pattern to the non-coating portion region of the electrode substrate;
- and
- an electrode rolling part adapted for rolling the electrode substrate, and
- a non-coating portion induction heating part configured to induction-heat a partial region of a coating portion and an entire region of the non-coating portion based on a boundary line between the coating portion and the non-coating portion of the electrode substrate,
- wherein the pair of non-coating portion rolling rollers includes a first non-coating portion rolling roller located at an upper portion, arranged to be above the current collector layer, and made of a first material, and a second non-coating portion rolling roller located at a lower portion, arranged to be below the current collector, and made of a second material, and
- a friction coefficient of a surface of the first material of the first non-coating portion rolling roller is lower than a friction coefficient of a surface of the second material of the second non-coating portion rolling roller.
4 more elements
An electrode rolling method comprising:
- a method for rolling an electrode substrate including a current collector and an electrode composite layer formed on one surface or both surfaces of the current collector,
- pressing a non-coating portion region of the electrode substrate using a pair of non-coating portion rolling rollers including a structure with surface unevenness to form an unevenness pattern on the non-coating portion region of the electrode substrate;
- rolling the electrode substrate, and
- induction-heating a partial region of a coating portion and an entire region of the non-coating portion based on a boundary line between the coating portion and the non-coating portion of the electrode substrate,
- wherein the pair of non-coating portion rolling rollers includes a first non-coating portion rolling roller located at an upper portion of the current collector and made of a first material, and a second non-coating portion rolling roller located at a lower portion of the current collector and made of a second material, and
- wherein a friction coefficient of a surface of the first material of the first non-coating portion rolling roller is lower than the friction coefficient of a surface of the second material of the second non-coating portion rolling roller.
3 more elements
Dependencies are inferred from the claim text.