# US 2021/0280841 A1 · Bundling method, manufacturing method of battery, and bundling apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0280841 A1 - Document ID: US20210280841A1 - Status: Published application - Kind: A1 - Application number: 17/094,917 - Filed: 2020-11-11 - Published: 2021-09-09 - Earliest claimed: 2020-03-03 - Assignees: Kabushiki Kaisha Toshiba - Applicants: Kabushiki Kaisha Toshiba - Inventors: Takahiro AIZAWA; Kazuo SHIMOKAWA; Takashi ITO; Masatoshi TANABE - Web page: https://patentgrep.com/patent/US20210280841A1 ## CPC - H01M 4/043: {involving compressing or compaction} - H01M 50/538: Connection of several leads or tabs of wound or folded electrode stacks - B65B 13/04: with means for guiding the binding material around the articles prior to severing from supply - B65B 13/24: Securing ends of binding material - H01M 50/54: Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges - H01M 10/052: Li-accumulators - H01M 10/058: Construction or manufacture - H01M 2004/027: {Negative electrodes} - H01M 2004/028: {Positive electrodes} - Y02E 60/10: Energy storage using batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - B65B: MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING (bundling and pressing devices for cigars A24C1/44; devices for tensioning and securing binders adapted to be supported by the article or articles to be bound B25B25/00; applying closure members to bottles, jars or similar containers B67B1/00-B67B6/00; concurrent cleaning, filling and closing of bottles B67C7/00; emptying bottles, jars, cans, casks, barrels or similar containers B67C9/00) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract According to an embodiment, a bundling method and a bundling apparatus of a plurality of band-shaped parts of a current collecting tab in an electrode group, in which the current collecting tab projects, are provided. In the bundling method and apparatus, the current collecting tab is deformed by moving a bundling tool, with the bundling tool being abutted to the current collecting tab from an outer side in a lamination direction of a plurality of band-shaped parts. At this time, the bundling tool is moved so that a moving direction of the bundling tool is inclined with respect to the lamination direction of the plurality of band-shaped parts, toward a side opposite to a side where the current collecting tab projects. ## Claims ### Claim 1 A bundling method of a plurality of band-shaped parts of a current collecting tab in an electrode group where the current collecting tab projects, the method comprising: deforming the current collecting tab by moving a bundling tool, with the bundling tool being abutted to the current collecting tab from an outer side in a lamination direction of the plurality of band-shaped parts, wherein the bundling tool is moved in such a manner that a moving direction of the bundling tool is inclined with respect to the lamination direction of the plurality of band-shaped parts toward a side opposite to a side where the current collecting tab projects. ### Claim 2 (depends on 1) The bundling method according to claim 1, wherein in a moving of the bundling tool in which the moving direction is inclined with respect to the lamination direction of the plurality of band-shaped parts, the following expression (A) is satisfied: tan θ=α/β (A), wherein θ represents an angle of inclination which is an acute angle made by the moving direction of the bundling tool with respect to the lamination direction of the plurality of band-shaped parts, α represents a displacement of an outermost band-shaped part to a side opposite to the side where the current collecting tab projects, the displacement occurring in deformation of the current collecting tab caused by the moving of the bundling tool, and β represents a displacement of the outermost band-shaped part to an inside of the lamination direction, the displacement occurring in the deformation of the current collecting tab caused by the moving of the bundling tool. ### Claim 3 (depends on 1) The bundling method according to claim 1, further comprising: deforming the current collecting tab by moving the bundling tool further, with the bundling tool being abutted to the current collecting tab, toward a side opposite to the side where the current collecting tab projects, after deforming the current collecting tab by moving the bundling tool in the moving direction inclined with respect to the lamination direction of the plurality of band-shaped parts. ### Claim 4 (depends on 1) A manufacturing method of battery, comprising: forming an electrode group from a positive electrode and a negative electrode in such a manner that the current collecting tab projects; bundling the plurality of band-shaped parts in the current collecting tab of the electrode group by the bundling method according to claim 1; and electrically connecting the current collecting tab in which the plurality of band-shaped parts are bundled to an electrode terminal. ### Claim 5 A bundling apparatus configured to bundle a plurality of band-shaped parts of a current collecting tab in an electrode group in which the current collecting tab projects, the apparatus comprising: a bundling tool abuttable to the current collecting tab from an outer side in a lamination direction of the plurality of band-shaped parts; and a controller configured to move the bundling tool with the bundling tool being abutted to the current collecting tab and thereby configured to deform the current collecting tab, the controller being configured to control a moving of the bundling tool in such a manner that a moving direction of the bundling tool is inclined with respect to the lamination direction of the plurality of band-shaped parts, toward a side opposite to a side where the current collecting tab projects.