# US 2022/0285665 A1 · Electrode Rolling Apparatus Comprising Non-Coating Portion Pressing Part and Electrode Rolling Method Using the Same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0285665 A1 - Document ID: US20220285665A1 - Status: Published application - Kind: A1 - Application number: 17/641,296 - Filed: 2021-05-20 - Published: 2022-09-08 - Earliest claimed: 2020-05-22 - Assignees: LG Energy Solution, Ltd. - Applicants: LG Energy Solution, Ltd. - Inventors: Jung Eun Lee; Hwan Han Kim; Jeong Soo Seol; Jaehyuk Choi; Soohyung Hong - Web page: https://patentgrep.com/patent/US20220285665A1 ## CPC - B30B 11/18: using profiled rollers - H01M 4/0435: {Rolling or calendering} - B30B 15/308: {in a continuous manner, e.g. for roller presses, screw extrusion presses} - B30B 15/34: Heating or cooling presses or parts thereof - H01M 4/0404: {by coating on electrode collectors} - H01M 4/0471: {involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis} - H01M 4/139: Processes of manufacture - Y02E 60/10: Energy storage using batteries - B30B: PRESSES IN GENERAL (producing ultra-high pressure or ultra-high pressure and high temperature to effect modifications of a substance, e.g. for making artificial diamonds B01J3/00 ){(compressing means for refuse receptacles B65F1/1405)} - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## 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. ## Claims ### Claim 1 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 adapted for pressing a non-coating portion region of the electrode substrate to form a pattern; and an electrode rolling part adapted for rolling the electrode substrate. ### Claim 2 (depends on 1) The electrode rolling apparatus of claim 1, wherein: the non-coating portion pressing part includes a pair of non-coating portion rolling rollers adapted for pressing the non-coating portion region of the electrode substrate, wherein at least one of the pair of non-coating portion rolling rollers has a structure with surface unevenness. ### Claim 3 (depends on 1) The electrode rolling apparatus of claim 1, wherein: the non-coating portion pressing part includes a pair of non-coating portion rolling rollers adapted for pressing the non-coating portion region of the electrode substrate, wherein the pair of non-coating portion rolling rollers has different hardness. ### Claim 4 (depends on 3) The electrode rolling apparatus of claim 3, wherein: the pair of non-coating portion rolling rollers includes a first non-coating portion rolling roller having a structure with surface unevenness and a second non-coating portion rolling roller having a structure without unevenness formed on its surface. ### Claim 5 (depends on 4) The electrode rolling apparatus of claim 4, wherein: the first non-coating portion rolling roller has hardness higher than that of the second non-coating portion rolling roller. ### Claim 6 (depends on 1) The electrode rolling apparatus of claim 1, further comprising: a non-coating portion induction heating part adapted for induction-heating the non-coating portion region of the electrode substrate. ### Claim 7 (depends on 6) The electrode rolling apparatus of claim 6, wherein: the non-coating portion induction heating part is adapted to induction-heats 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. ### Claim 8 (depends on 7) The electrode rolling apparatus of claim 7, wherein: an insulation coating layer is covered in the boundary line between the coating portion and the non-coating portion of the electrode substrate. ### Claim 9 (depends on 6) The electrode rolling apparatus of claim 6, wherein: the non-coating portion pressing part is located at one or more selected from the group consisting of: (i) a front end of the non-coating portion induction heating part, (ii) between the non-coating portion induction heating part and the electrode rolling part, and (iii) a rear end of the electrode rolling part. ### Claim 10 (depends on 1) The electrode rolling apparatus of claim 1, wherein: the non-coating portion pressing part is located at one or more selected from the group consisting of: (i) the front end of the electrode rolling part and (ii) the rear end of the electrode rolling part. ### Claim 11 (depends on 1) The electrode rolling apparatus of claim 1, wherein: the electrode rolling part includes a pair of rolling rollers adapted for pressing a region including the coating portion of the electrode substrate. ### Claim 12 (depends on 1) The electrode rolling apparatus of claim 1, further comprising: a drying part adapted for heating and drying the electrode substrate, wherein the drying part has a structure which is located downstream of the electrode rolling part or located on the same line to include the electrode rolling part. ### Claim 13 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 to form a pattern; and rolling the electrode substrate. ### Claim 14 (depends on 13) The electrode rolling method of claim 13, wherein: during the pressing the non-coating portion region, the non-coating portion regions formed on both side surfaces of the electrode substrate are pressed by a pair of non-coating portion rolling rollers to form an unevenness pattern, respectively. ### Claim 15 (depends on 14) The electrode rolling method of claim 14, wherein: the unevenness pattern has a shape of repeated mountains and valleys, an average distance between the mountains is in a range of 0.5 to 10 mm, and an average height difference between the mountain and the valley is in a range of 0.1 to 5 mm. ### Claim 16 (depends on 13) The electrode rolling method of claim 13, further comprising: induction-heating the non-coating portion region of the electrode substrate. ### Claim 17 (depends on 16) The electrode rolling method of claim 16, wherein: during the induction heating, the non-coating portion region of the electrode substrate is heated at a temperature in the range of 100 to 300° C.