# US 12,002,933 B2 · Electrode assembly for secondary battery including different shaped electrodes > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,002,933 B2 - Document ID: US12002933B2 - Status: Granted - Kind: B2 - Application number: 17/599,701 - Filed: 2020-09-28 - Published: 2022-06-23 - Granted: 2024-06-04 - Earliest claimed: 2019-10-01 - Assignees: LG Energy Solution, Ltd. - Applicants: LG Energy Solution, Ltd. - Inventors: Hyun Park; Hyun Tae Kim - Web page: https://patentgrep.com/patent/US12002933B2 ## CPC - H01M 10/0413: {Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes} - H01M 10/441: {for several batteries or cells simultaneously or sequentially} - H01M 10/0445: {Multimode batteries, e.g. containing auxiliary cells or electrodes switchable in parallel or series connections} - H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - H01M 10/48: Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) - H01M 50/249: specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) - H01M 50/531: Electrode connections inside a battery casing - H01M 50/533: characterised by the shape of the leads or tabs - H01M 50/54: Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges - H01M 50/105: Pouches or flexible bags - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - 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 An electrode assembly for a secondary battery includes at least one positive electrode and at least one negative electrode alternately stacked in a state in which a separator is interposed therebetween. The positive electrode includes a first positive electrode having a single positive electrode tab and a second positive electrode having two or more positive electrode tabs. The negative electrode includes a first negative electrode having a single negative electrode tab and a second negative electrode having two or more negative electrode tabs. The output of the electrode assembly is adjustable. ## Claims ### Claim 1 An electrode assembly for a secondary battery comprising: at least two positive electrodes and at least two negative electrodes alternately stacked in a state in which a separator is interposed therebetween, wherein the at least two positive electrodes comprise at least one first positive electrode having a single positive electrode tab and at least one second positive electrode having two or more positive electrode tabs, wherein the at least two negative electrodes comprise at least one first negative electrode having a single negative electrode tab and at least one second negative electrode having two or more negative electrode tabs, and wherein the single positive electrode tab of the at least one first positive electrode aligns with one of the two or more positive electrode tabs of the at least one second positive electrode when the at least two positive electrodes are stacked. ### Claim 2 (depends on 1) The electrode assembly for a secondary battery according to claim 1, wherein the at least one second positive electrode comprises a low-rate positive electrode tab configured to form a first positive electrode tab bundle and a high-rate positive electrode tab configured to form a second positive electrode tab bundle, and wherein the at least one second negative electrode comprises a low-rate negative electrode tab configured to form a first negative electrode tab bundle and a high-rate negative electrode tab configured to form a second negative electrode tab bundle. ### Claim 3 (depends on 2) The electrode assembly for a secondary battery according to claim 2, wherein the high-rate positive electrode tab and the low-rate positive electrode tab are located at different outer peripheries of the positive electrode, and wherein the high-rate negative electrode tab and the low-rate negative electrode tab are located at different outer peripheries of the negative electrode. ### Claim 4 (depends on 3) The electrode assembly for a secondary battery according to claim 3, wherein the high-rate positive electrode tab and the low-rate positive electrode tab extend in opposite directions, and wherein the high-rate negative electrode tab and the low-rate negative electrode tab extend in opposite directions. ### Claim 5 (depends on 2) The electrode assembly for a secondary battery according to claim 2, wherein a width of each of the high-rate positive electrode tab and the high-rate negative electrode tab is equal to or greater than a width of each of the low-rate positive electrode tab and the low-rate negative electrode tab. ### Claim 6 (depends on 2) The electrode assembly for a secondary battery according to claim 2, further comprising a first positive electrode lead and a second positive electrode lead connected to the first positive electrode tab bundle and the second positive electrode tab bundle, respectively; and a first negative electrode lead and a second negative electrode lead connected to the first negative electrode tab bundle and the second negative electrode tab bundle, respectively. ### Claim 7 (depends on 6) The electrode assembly for a secondary battery according to claim 6, wherein the first positive electrode lead and the second positive electrode lead are connected to each other and the first negative electrode lead and the second negative electrode lead are connected to each other in a battery case. ### Claim 8 (depends on 2) The electrode assembly for a secondary battery according to claim 2, wherein charge and discharge of a secondary battery through the second positive electrode tab bundle and the second negative electrode tab bundle are performed only under a high-rate condition. ### Claim 9 (depends on 2) The electrode assembly for a secondary battery according to claim 2, wherein charge and discharge of a secondary battery through the first positive electrode tab bundle, the second positive electrode tab bundle, the first negative electrode tab bundle, and the second negative electrode tab bundle are performed only under a maximum-rate condition. ### Claim 10 (depends on 6) A pouch-shaped secondary battery comprising: a pouch-shaped battery case; and the electrode assembly for a secondary battery according to claim 6 in the pouch-shaped battery case. ### Claim 11 (depends on 10) A battery pack comprising the pouch-shaped secondary battery according to claim 10, wherein the battery pack comprises a controller configured to adjust an output amount of the battery pack. ### Claim 12 (depends on 11) The battery pack according to claim 11, wherein the controller is configured: to determine a low-rate condition, a high-rate condition, and a maximum-rate condition; to perform output through a first positive electrode tab bundle and a first negative electrode tab bundle under the low-rate condition; to perform output through a second positive electrode tab bundle and a second negative electrode tab bundle under the high-rate condition; and to perform output through the first positive electrode tab bundle, the second positive electrode tab bundle, the first negative electrode tab bundle, and the second negative electrode tab bundle under the maximum-rate condition. ### Claim 13 (depends on 1) The electrode assembly for a secondary battery according to claim 1, wherein the two or more positive electrode tabs are perpendicular to each other, and wherein the two or more negative electrode tabs are perpendicular to each other. ### Claim 14 An electrode assembly for a secondary battery comprising: at least two positive electrodes and at least two negative electrodes alternately stacked in a state in which a separator is interposed therebetween, wherein the at least two positive electrodes comprise at least one first positive electrode having a single positive electrode tab and at least one second positive electrode having two or more positive electrode tabs, wherein the at least two negative electrodes comprise at least one first negative electrode having a single negative electrode tab and at least one second negative electrode having two or more negative electrode tabs, and wherein the single negative electrode tab of the at least one first negative electrode aligns with one of the two or more negative electrode tabs of the at least one second negative electrode when the at least two negative electrodes are stacked.