# US 12,218,383 B2 · Electrode plate for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,218,383 B2 - Document ID: US12218383B2 - Status: Granted - Kind: B2 - Application number: 17/041,693 - Filed: 2019-02-28 - Published: 2021-01-14 - Granted: 2025-02-04 - Earliest claimed: 2018-04-06 - Assignees: Panasonic Intellectual Property Management Co., Ltd. - Applicants: Panasonic Intellectual Property Management Co., Ltd. - Inventors: Takanori Maruo; Shinji Mino; Motoki Kinugawa - Web page: https://patentgrep.com/patent/US12218383B2 ## CPC - H01M 50/538: Connection of several leads or tabs of wound or folded electrode stacks - H01M 4/13: Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof - H01M 4/625: {Carbon or graphite} - H01M 10/0587: of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators - H01M 4/131: Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx - H01M 4/505: of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy - H01M 4/525: of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy - H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - H01M 50/534: characterised by the material of the leads or tabs - H01M 50/536: characterised by the method of fixing the leads to the electrodes, e.g. by welding - 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 This electrode plate for a non-aqueous electrolyte secondary battery has a band-like core and a first active substance layer formed on at least a first surface of the core. A current-collecting lead is connected to an exposed section at which a portion of the first surface of the core is exposed in the longitudinal direction. The electrode plate for a non-aqueous electrolyte secondary battery has a second active substance layer which is more electroconductive than the first active substance layer and which is disposed on a portion of the first surface such that it adjoins with the exposed section. ## Claims ### Claim 1 An electrode plate for a non-aqueous electrolyte secondary battery, comprising: a core having a band shape; a first active substance layer formed over at least a first surface of the core, wherein an electricity collecting lead is connected to an exposed portion in which the core is exposed at a portion of the first surface, wherein the exposed portion does not extend across an entire length of the first surface in a long-length direction of the core; and a second active substance layer that is disposed over a portion of the first surface, adjacent to the exposed portion, and that has a higher electrical conductivity than the first active substance layer, wherein the first active substance layer and the second active substance layer are located in different ranges of the first surface in a plan view of the core, and the second active substance layer has a larger amount of an electrically conductive material per unit area than the first active substance layer. ### Claim 2 (depends on 1) The electrode plate for non-aqueous electrolyte secondary battery according to claim 1, wherein an electrically conductive material contained in the second active substance layer is in a fiber-form, and an electrically conductive material contained in the first active substance layer is in a non-fiber, particle form. ### Claim 3 (depends on 1) The electrode plate for non-aqueous electrolyte secondary battery according to claim 1, wherein the second active substance layer is disposed only at a portion that does not extend across an entire length of the first surface in a short-length direction of the core. ### Claim 4 (depends on 3) The electrode plate for non-aqueous electrolyte secondary battery according to claim 3, wherein the second active substance layer is formed along the long-length direction of the core. ### Claim 5 (depends on 4) The electrode plate for non-aqueous electrolyte secondary battery according to claim 4, wherein the second active substance layer extends across an entire length of the first surface in the long-length direction, except for the exposed portion of the core in the long-length direction. ### Claim 6 (depends on 1) The electrode plate for non-aqueous electrolyte secondary battery according to claim 1, wherein the second active substance layer is formed at an end on a side of extension of the electricity collecting lead in a short-length direction of the core. ### Claim 7 (depends on 6) The electrode plate for non-aqueous electrolyte secondary battery according to claim 6, wherein the first active substance layer is formed at an end on an opposite side to the side of extension of the electricity collecting lead in the short-length direction of the core, over an entire length of the core in the long-length direction, and the exposed portion is formed over the core in a manner to not reach an end on a side opposite to an end on the side of extension of the electricity collecting lead. ### Claim 8 (depends on 1) A non-aqueous electrolyte secondary battery comprising: an electrode element in which at least one cathode plate and at least one anode plate are rolled with a separator therebetween; and an exterior housing can that houses the electrode element, wherein at least one of the cathode plate or the anode plate is the electrode plate for a non-aqueous electrolyte secondary battery according to claim 1. ### Claim 9 An electrode plate for a non-aqueous electrolyte secondary battery, comprising: a core having a band shape; a first active substance layer formed over at least a first surface of the core, wherein an electricity collecting lead is connected to an exposed portion in which the core is exposed at a portion of the first surface, wherein the exposed portion does not extend across an entire length of the first surface in a long-length direction of the core; and a second active substance layer that is disposed over a portion of the first surface, adjacent to the exposed portion, and that has a higher electrical conductivity than the first active substance layer, wherein the first active substance layer and the second active substance layer are located in different ranges of the first surface in a plan view of the core, and the second active substance layer is formed only over an intermediate portion of the core in a short-length direction. ### Claim 10 An electrode plate for a non-aqueous electrolyte secondary battery, comprising: a core having a band shape; a first active substance layer formed over at least a first surface of the core, wherein an electricity collecting lead is connected to an exposed portion in which the core is exposed at a portion of the first surface in a long-length direction; and a second active substance layer that is disposed over a portion of the first surface, adjacent to the exposed portion, and that has a higher electrical conductivity than the first active substance layer, wherein the second active substance layer is formed only over an intermediate portion of the core in a short-length direction. ### Claim 11 (depends on 10) The electrode plate for non-aqueous electrolyte secondary battery according to claim 10, wherein the second active substance layer has a larger amount of an electrically conductive material per unit area than the first active substance layer. ### Claim 12 (depends on 10) The electrode plate for non-aqueous electrolyte secondary battery according to claim 10, wherein an electrically conductive material contained in the second active substance layer is in a fiber-form, and an electrically conductive material contained in the first active substance layer is in a non-fiber, particle form. ### Claim 13 (depends on 10) The electrode plate for non-aqueous electrolyte secondary battery according to claim 10, wherein the second active substance layer is disposed only at a portion that does not extend across an entire length of the first surface in a short-length direction of the core. ### Claim 14 (depends on 13) The electrode plate for non-aqueous electrolyte secondary battery according to claim 13, wherein the second active substance layer is formed along a long-length direction of the core. ### Claim 15 (depends on 14) The electrode plate for non-aqueous electrolyte secondary battery according to claim 14, wherein the second active substance layer extends across an entire length of the first surface in the long-length direction, except for the exposed portion of the core in the long-length direction. ### Claim 16 (depends on 10) The electrode plate for non-aqueous electrolyte secondary battery according to claim 10, wherein the second active substance layer is formed at an end on a side of extension of the electricity collecting lead in the short-length direction of the core. ### Claim 17 (depends on 16) The electrode plate for non-aqueous electrolyte secondary battery according to claim 16, wherein the first active substance layer is formed at an end on an opposite side to the side of extension of the electricity collecting lead in the short-length direction of the core, over an entire length of the core in the long-length direction, and the exposed portion is formed over the core in a manner to not reach an end on a side opposite to an end on the side of extension of the electricity collecting lead. ### Claim 18 (depends on 11) A non-aqueous electrolyte secondary battery comprising: an electrode element in which at least one cathode plate and at least one anode plate are rolled with a separator therebetween; and an exterior housing can that houses the electrode element, wherein at least one of the cathode plate or the anode plate is the electrode plate for a non-aqueous electrolyte secondary battery according to claim 11. ### Claim 19 An electrode plate for a non-aqueous electrolyte secondary battery, comprising: a core having a band shape; a first active substance layer formed over at least a first surface of the core, wherein an electricity collecting lead is connected to an exposed portion in which the core is exposed at a portion of the first surface, wherein the exposed portion does not extend across an entire length of the first surface in a long-length direction of the core; and a second active substance layer that is disposed over a portion of the first surface, adjacent to the exposed portion, and that has a higher electrical conductivity than the first active substance layer, wherein the first active substance layer and the second active substance layer are located in different ranges of the first surface in a plan view of the core, the second active substance layer includes a fiber-form electrically conductive material, and the first active substance layer includes a non-fiber, particle form electrically conductive material and is free of the fiber-form electrically conductive material.