# US 10,770,732 B2 · Cable-type secondary battery including spaced spring inner electrode support wound on outside of winding core > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,770,732 B2 - Document ID: US10770732B2 - Status: Granted - Kind: B2 - Application number: 15/767,024 - Filed: 2016-10-21 - Published: 2018-10-25 - Granted: 2020-09-08 - Earliest claimed: 2015-10-21 - Assignees: LG Chem, Ltd. - Applicants: LG Chem, Ltd. - Inventors: In-Sung Uhm; Je-Young Kim; Jong-Hwa Choi; Suk-In Noh; Young-Ji Yuk - Web page: https://patentgrep.com/patent/US10770732B2 ## CPC - H01M 4/74: Meshes or woven material; Expanded metal - H01M 4/622: {being polymers} - H01M 4/661: {Metal or alloys, e.g. alloy coatings (H01M4/669 take precedence)} - H01M 4/663: {containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres} - H01M 4/75: Wires, rods or strips - H01M 10/0431: {Cells with wound or folded electrodes (H01M10/045 takes precedence)} - H01M 10/052: Li-accumulators - 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 50/107: having curved cross-section, e.g. round or elliptic (H01M50/103, H01M50/109, H01M50/11 take precedence) - H01M 50/119: Metals - H01M 50/121: Organic material - H01M 50/129: with two or more layers of only organic material - H01M 50/463: Separators, membranes or diaphragms characterised by their shape - H01M 2300/0082: Organic polymers - 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 is a cable-type secondary battery, including: a winding core; an inner electrode support wound on the outside of the winding core in the form of a spaced spring so that the winding core may be exposed partially; a sheet-type first inner electrode formed on the outside of the exposed winding core by spiral winding; a sheet-type first separation layer formed on the outside of the first inner electrode by spiral winding; a sheet-type second inner electrode formed on the outside of the first separation layer by spiral winding; a second separation layer formed on the outside of the second inner electrode by spiral winding; and an outer electrode formed on the outside of the second separation layer by spiral winding. ## Claims ### Claim 1 A cable-type secondary battery, comprising: a winding core; an inner electrode support wound on the outside of the winding core in the form of a spaced spring so that the winding core may be exposed partially; a sheet-shaped first inner electrode formed on the outside of the exposed winding core by spiral winding; a sheet-shaped first separation layer formed on the outside of the first inner electrode by spiral winding; a sheet-shaped second inner electrode formed on the outside of the first separation layer by spiral winding; a second separation layer formed on the outside of the second inner electrode by spiral winding; and an outer electrode formed on the outside of the second separation layer by spiral winding. ### Claim 2 (depends on 1) The cable-type secondary battery according to claim 1, wherein the winding core is a wire-shaped, twisted wire-shaped, hollow, net-shaped, strip-shaped, or mesh-shaped winding core. ### Claim 3 (depends on 1) The cable-type secondary battery according to claim 1, wherein a section perpendicular to a longitudinal direction of the winding core has a circular, ellipsoidal, quadrangular or triangular shape. ### Claim 4 (depends on 1) The cable-type secondary battery according to claim 1, wherein the winding core comprises carbon nanotubes; stainless steel; aluminum; nickel; titanium; baked carbon; copper; stainless steel surface-treated with carbon, nickel, titanium or silver; aluminum-cadmium alloy; or a polymer. ### Claim 5 (depends on 1) The cable-type secondary battery according to claim 1, wherein the sheet-shaped first inner electrode, the first separation layer, the second inner electrode, the second separation layer and the outer electrode has a structure of a strip extended in one direction. ### Claim 6 (depends on 1) The cable-type secondary battery according to claim 1, wherein the first inner electrode and the outer electrode are cathodes and the second inner electrode is an anode, or the first inner electrode and the outer electrode are anodes and the second inner electrode is a cathode. ### Claim 7 (depends on 1) The cable-type secondary battery according to claim 1, wherein the first inner electrode comprises a first inner current collector and a first inner electrode active material layer formed on one surface of the first inner current collector, the outer electrode comprises an outer current collector and an outer electrode active material layer formed on one surface of the outer current collector, and the second inner electrode comprises a second inner current collector and second inner electrode active material layers formed on both surfaces of the second inner current collector. ### Claim 8 (depends on 7) The cable-type secondary battery according to claim 7, which further comprises a polymer film layer formed on at least one of another surface of the first inner current collector and another surface of the outer current collector. ### Claim 9 (depends on 7) The cable-type secondary battery according to claim 7, wherein at least one of the first inner current collector, the second inner current collector and the outer current collector is a film-shaped current collector or a mesh-shaped current collector.