# US 10,483,502 B2 · Battery cell having anti-wrinkle member > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,483,502 B2 - Document ID: US10483502B2 - Status: Granted - Kind: B2 - Application number: 15/117,341 - Filed: 2014-10-31 - Published: 2016-12-01 - Granted: 2019-11-19 - Earliest claimed: 2014-02-14 - Assignees: LG Chem, Ltd. - Applicants: LG Chem, Ltd. - Inventors: Sung Pil Yoon; Jin Soo Lee; Joo Hwan Sung; Seong Min Kim; Jung Koo Kang; Ju Bin Kim; Hae Jin Lim; Seunghe Woo - Web page: https://patentgrep.com/patent/US10483502B2 ## CPC - H01M 10/0436: {Small-sized flat cells or batteries for portable equipment} - H01M 10/0413: {Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes} - H01M 50/124: having a layered structure - H01M 50/1245: {characterised by the external coating on the casing} - H01M 50/136: Flexibility or foldability - H01M 50/24: adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658) - H01M 50/44: Fibrous material - H01M 50/131: characterised by physical properties, e.g. gas permeability, size or heat resistance - H01M 50/55: on the same side of the cell - H01M 50/553: Terminals adapted for prismatic, pouch or rectangular cells - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - H01M 2220/30: Batteries in portable systems, e.g. mobile phone, laptop - Y02E 60/10: Energy storage using batteries - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - 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 - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract Disclosed herein is a battery cell configured to have a structure in which an electrode assembly, including positive electrodes and negative electrodes stacked in the state in which separators are disposed respectively between the positive electrodes and the negative electrodes, is mounted in a cell case in the state in which the electrode assembly is impregnated with an electrolyte, wherein the electrode assembly and the cell case are deformable in response to the shape of a device in which the battery cell is mounted, and anti-wrinkle members, for preventing wrinkles from being formed in the cell case when the cell case is deformed, are added to at least portions of the outer surfaces of the electrode assembly. ## Claims ### Claim 1 A battery cell configured to have a structure in which an electrode assembly is mounted in a cell case in the state in which the electrode assembly is impregnated with an electrolyte, wherein the electrode assembly and the cell case are deformable in response to a shape of a device in which the battery cell is mounted, and anti-wrinkle members, for preventing wrinkles from being formed in the cell case when the cell case is deformed, are added to at least portions of inner surfaces of the cell case facing outermost electrodes of the electrode assembly, wherein each of the anti-wrinkle members has a reticular structure, and wherein the reticular structure comprises a plurality of fibers woven in the shape of a net. ### Claim 2 (depends on 1) The battery cell according to claim 1, wherein the reticular structure has a continuous honeycomb pattern, a continuous lattice pattern, or a continuous diamond pattern, when viewed from above. ### Claim 3 (depends on 1) The battery cell according to claim 1, wherein each of the anti-wrinkle members is a sheet type member. ### Claim 4 A battery cell configured to have a structure in which an electrode assembly is mounted in a cell case in the state in which the electrode assembly is impregnated with an electrolyte, wherein the electrode assembly and the cell case are deformable in response to a shape of a device in which the battery cell is mounted, and anti-wrinkle members, for preventing wrinkles from being formed in the cell case when the cell case is deformed, are added to at least portions of inner surfaces of the cell case facing outermost electrodes of the electrode assembly, wherein each of the anti-wrinkle member is s sheet type member, and wherein each of the anti-wrinkle member has a porous structure in which a plurality of pores is formed in the sheet type member, and wherein the porous structure is configured such that each of the pores has a diameter of 0.1 mm to 1 mm. ### Claim 5 (depends on 4) The battery cell according to claim 4, wherein the porous structure is configured such that the pores are arranged at intervals of 300% to 1000% the diameter of each of the pores. ### Claim 6 (depends on 1) The battery cell according to claim 1, wherein each of the anti-wrinkle members is made of a polymer material. ### Claim 7 (depends on 6) The battery cell according to claim 6, wherein the polymer material is at least one selected from a group consisting of polyethylene (PE), polypropylene (PP), polystyrene (PS), polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), polyacrylonitrile (PAN), silicone resin, natural rubber, and synthetic rubber. ### Claim 8 (depends on 1) The battery cell according to claim 1, wherein each of the anti-wrinkle members is made of a metal material coated with an insulative material. ### Claim 9 (depends on 8) The battery cell according to claim 8, wherein the metal material is at least one selected from a group consisting of aluminum, copper, iron, nickel, and silver. ### Claim 10 (depends on 8) The battery cell according to claim 8, wherein the insulative material is at least one selected from a group consisting of polyolefin resin, fluorocarbon resin, silicone resin, and rubber resin. ### Claim 11 (depends on 1) The battery cell according to claim 1, wherein the anti-wrinkle members are thermally welded to the inner surfaces of the cell case. ### Claim 12 (depends on 1) The battery cell according to claim 1, wherein the anti-wrinkle members are bonded to the inner surfaces of the cell case. ### Claim 13 (depends on 12) The battery cell according to claim 12, wherein the anti-wrinkle members are bonded to the inner surfaces of the cell case using an unsaturated polyester adhesive, a polyacrylate adhesive, or a silicone adhesive. ### Claim 14 (depends on 1) The battery cell according to claim 1, wherein the anti-wrinkle members are added respectively to an upper inner surface of the cell case facing an uppermost electrode of the electrode assembly and to a lower inner surface of the cell case facing a lowermost electrode of the electrode assembly. ### Claim 15 (depends on 1) The battery cell according to claim 1, wherein the anti-wrinkle members are added to portions of inner surfaces of the cell case adjacent to a vertical axis passing through a middle of the electrode assembly. ### Claim 16 (depends on 15) The battery cell according to claim 15, wherein the anti-wrinkle members are added such that a middle of each of the anti-wrinkle members is located on the vertical axis passing through the middle of the electrode assembly and wherein the anti-wrinkle members are added to portions of the inner surfaces of the cell case equivalent to 20% to 100% an entire area of the electrode assembly. ### Claim 17 (depends on 1) The battery cell according to claim 1, wherein each of the anti-wrinkle members has a thickness of 0.1 μm to 150 μm. ### Claim 18 (depends on 1) The battery cell according to claim 1, wherein the cell case is a pouch-shaped case made of a laminate sheet comprising a resin layer and a metal layer. ### Claim 19 (depends on 1) The battery cell according to claim 1, wherein the electrode assembly has a plate-shaped structure and wherein the electrode assembly is a stacked type electrode assembly configured to have a structure in which sheet type positive electrodes and negative electrodes are stacked in the state in which separators are disposed respectively between the positive electrodes and the negative electrodes, a stacked/folded type electrode assembly configured to have a structure in which predetermined numbers of positive electrodes and negative electrodes are sequentially stacked in the state in which separators are disposed respectively between the positive electrodes and the negative electrodes to constitute a bi-cell or a full cell, and then a plurality of bi-cells or full cells is folded using a separation film, or a laminated/stacked type electrode assembly configured to have a structure in which bi-cells or full cells are stacked in the state in which separators are disposed respectively between the bi-cells or the full cells. ### Claim 20 (depends on 1) A battery pack comprising two or more battery cells according to claim 1. ### Claim 21 (depends on 20) A device comprising a battery pack according to claim 20 as a power source. ### Claim 22 (depends on 21) The device according to claim 21, wherein the device is selected from a group consisting of a mobile phone, a portable computer, a smart phone, a tablet PC, a smart pad, a netbook computer, a light electronic vehicle (LEV), an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, and a power storage apparatus. ### Claim 23 A battery cell configured to have a structure in which an electrode assembly is mounted in a cell case in the state in which the electrode assembly is impregnated with an electrolyte, wherein the electrode assembly and the cell case are deformable in response to a shape of a device in which the battery cell is mounted, and anti-wrinkle members, for preventing wrinkles from being formed in the cell case when the cell case is deformed, are added to at least portions of inner surfaces of the cell case facing outermost electrodes of the electrode assembly, wherein each of the anti-wrinkle members has a reticular structure, and wherein the reticular structure has a continuous honeycomb pattern, a continuous lattice pattern, or a continuous diamond pattern, when viewed from above. ### Claim 24 A battery cell configured to have a structure in which an electrode assembly is mounted in a cell case in the state in which the electrode assembly is impregnated with an electrolyte, wherein the electrode assembly and the cell case are deformable in response to a shape of a device in which the battery cell is mounted, and anti-wrinkle members, for preventing wrinkles from being formed in the cell case when the cell case is deformed, are added to at least portions of inner surfaces of the cell case facing outermost electrodes of the electrode assembly, wherein each of the anti-wrinkle member is s sheet type member, and wherein each of the anti-wrinkle member has a porous structure in which a plurality of pores is formed in the sheet type member, and wherein the porous structure is configured such that the pores are arranged at intervals of 300% to 1,000% the diameter of each of the pores. ### Claim 25 A battery cell configured to have a structure in which an electrode assembly is mounted in a cell case in the state in which the electrode assembly is impregnated with an electrolyte, wherein the electrode assembly and the cell case are deformable in response to a shape of a device in which the battery cell is mounted, and anti-wrinkle members, for preventing wrinkles from being formed in the cell case when the cell case is deformed, are added to at least portions of inner surfaces of the cell case facing outermost electrodes of the electrode assembly, wherein each of the anti-wrinkle members has a reticular structure, and wherein the anti-wrinkle members are bonded to the inner surfaces of the cell case using an unsaturated polyester adhesive, a polyacrylate adhesive, or a silicone adhesive.