# US 10,319,952 B2 · Battery cell having electrode assembly of staggered array structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,319,952 B2 - Document ID: US10319952B2 - Status: Granted - Kind: B2 - Application number: 14/439,092 - Filed: 2014-02-07 - Published: 2015-11-26 - Granted: 2019-06-11 - Earliest claimed: 2013-02-13 - Assignees: LG Chem, Ltd. - Applicants: LG Chem, Ltd. - Inventors: Sungjin Kwon; Dong-Myung Kim; Ki Woong Kim - Web page: https://patentgrep.com/patent/US10319952B2 ## CPC - H01M 10/0585: of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators - 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 10/0587: of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators - H01M 50/103: prismatic or rectangular (H01M50/109, H01M50/11 take precedence) - H01M 50/105: Pouches or flexible bags - H01M 50/119: Metals - H01M 50/121: Organic material - H01M 50/124: having a layered structure - Y02E 60/10: Energy storage using batteries - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - 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 - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract Disclosed herein is a battery cell configured to have a structure in which two or more electrode assemblies, each including positive electrodes, negative electrodes, and separators disposed respectively between the positive electrodes and the negative electrodes, are mounted in a battery case, wherein the electrode assemblies are stacked such that electrode terminals of the electrode assemblies are aligned in a vertical direction, one side lower edge of an upper one of the electrode assemblies is disposed in contact with a top surface of a lower one of the electrode assemblies, and one side upper edge of the lower electrode assembly is disposed in contact with a bottom surface of the upper electrode assembly at an interface between the electrode assemblies, and the battery case has an internal shape corresponding to an external shape of the stacked electrode assemblies. ## Claims ### Claim 1 A battery cell configured to have a structure in which two or more electrode assemblies, each comprising positive electrodes, negative electrodes, and separators disposed respectively between the positive electrodes and the negative electrodes, are mounted in a battery case, wherein the electrode assemblies are stacked such that electrode terminals of the electrode assemblies are aligned to overlap in a vertical direction, one side lower edge of an upper one of the electrode assemblies is disposed in contact with a top surface of a lower one of the electrode assemblies, and one side upper edge of the lower electrode assembly is disposed in contact with a bottom surface of the upper electrode assembly at an interface between the electrode assemblies such that the upper electrode assembly is offset relative to the lower electrode assembly, the battery case has an internal shape corresponding to an external shape of the stacked electrode assemblies, and the electrode assemblies are configured to have a combination of two different electrode assembly types selected from among a jelly-roll type electrode assembly, a stacked type electrode assembly, a stacked/folded type electrode assembly, or a laminated and stacked type electrode assembly. ### Claim 2 (depends on 1) The battery cell according to claim 1, wherein each of the electrode assemblies is generally configured to have a plate-shaped hexahedral structure. ### Claim 3 (depends on 1) The battery cell according to claim 1, wherein one of the electrode assemblies is configured to have a wound type structure, a stacked type structure, or a stacked/folded type structure. ### Claim 4 (depends on 3) The battery cell according to claim 3, wherein at least one of the electrode assemblies is the jelly-roll type electrode assembly, the jelly roll type electrode assembly having an oval shape in which a length of each of the electrode assemblies is greater than a height of each of the electrode assemblies in vertical section. ### Claim 5 (depends on 3) The battery cell according to claim 3, wherein another of the electrode assemblies is configured to have a stacked type structure or a stacked/folded type structure in which outermost electrodes of the stacked electrode assemblies have the same polarity, and wherein the one of the electrode assemblies is a different type of electrode assemblies of that of the another of the electrode assemblies. ### Claim 6 (depends on 5) The battery cell according to claim 5, wherein each of the outermost electrodes of the stacked electrode assemblies is a negative electrode. ### Claim 7 (depends on 1) The battery cell according to claim 1, wherein the electrode assemblies are stacked such that all of the electrode terminals are arranged in the same direction. ### Claim 8 (depends on 7) The battery cell according to claim 7, wherein ends of the electrode assemblies from which the electrode terminals protrude are adjacent to each other in a vertical direction. ### Claim 9 (depends on 1) The battery cell according to claim 1, wherein one side lower edge of the upper electrode assembly disposed in contact with the top surface of the lower electrode assembly, and one side upper edge of the lower electrode assembly disposed in contact with the bottom surface of the upper electrode assembly, are one of the edges of the electrode assemblies formed in a direction perpendicular to a direction in which the electrode terminals protrude, respectively. ### Claim 10 (depends on 1) The battery cell according to claim 1, wherein the electrode assemblies have the same size. ### Claim 11 (depends on 1) The battery cell according to claim 1, wherein at least two of the electrode assemblies are different from each other in terms of at least one selected from among a thickness, a breadth (horizontal length), and a width (vertical length). ### Claim 12 (depends on 1) The battery cell according to claim 1, wherein the bottom surface of the upper electrode assembly is disposed in contact with the top surface of the lower electrode assembly by 20% to 95% of an area thereof. ### Claim 13 (depends on 1) The battery cell according to claim 1, wherein the battery case is a battery case made of a laminate sheet comprising a resin layer and a metal layer, or a metal can. ### Claim 14 (depends on 13) The battery cell according to claim 13, wherein the battery case made of the laminate sheet or the metal can is provided with a receiving unit having a stepped structure in width and height. ### Claim 15 (depends on 14) The battery cell according to claim 14, wherein the battery case made of the laminate sheet comprises an upper case and a lower case, and the upper case and the lower case are provided with receiving units corresponding to the external shape of the stacked electrode assemblies, the upper case and the lower case being coupled to each other such that the stacked electrode assemblies are received in the receiving units in a sealed space. ### Claim 16 (depends on 1) The battery cell according to claim 1, wherein the battery cell is a lithium ion battery cell or a lithium ion polymer battery cell. ### Claim 17 (depends on 1) A device comprising a battery cell according to claim 1 as a power source. ### Claim 18 (depends on 17) The device according to claim 17, 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 device. ### Claim 19 (depends on 1) The battery cell assembly according to claim 1, wherein one of the electrode assemblies is the jelly-roll type electrode assembly and another of the electrode assemblies is selected from among the stacked type electrode assembly, the stacked/folded type electrode assembly, or the laminated and stacked type electrode assembly. ### Claim 20 A battery cell configured to have a structure in which two or more electrode assemblies, each comprising positive electrodes, negative electrodes, and separators disposed respectively between the positive electrodes and the negative electrodes, are mounted in a battery case, wherein the electrode assemblies are stacked such that electrode terminals of the electrode assemblies are aligned in a vertical direction, an upper one of the electrode assemblies is shifted relative to a lower one of the electrode assemblies such that a portion of the upper electrode assembly does not overlap the lower electrode assembly, and the electrode assemblies are configured to have a combination of two different electrode assembly types selected from among a jelly-roll type electrode assembly, a stacked type electrode assembly, a stacked/folded type electrode assembly, or a laminated and stacked type electrode assembly.