# US 10,312,524 B2 · Electrical connection structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,312,524 B2 - Document ID: US10312524B2 - Status: Granted - Kind: B2 - Application number: 15/506,084 - Filed: 2015-08-21 - Published: 2018-08-09 - Granted: 2019-06-04 - Earliest claimed: 2014-08-25 - Assignees: Nissan Motor Co., Ltd.; Sanyo Chemical Industries, Ltd. - Applicants: Nissan Motor Co., Ltd.; Sanyo Chemical Industries, Ltd. - Inventors: Yasuhiko Ohsawa; Hajime Satou; Hiroshi Akama; Hideaki Horie; Yusuke Mizuno; Hiroshi Fukumoto; Masatoshi Okura; Yasuhiro Shindo; Yasuhiro Tsudo - Web page: https://patentgrep.com/patent/US10312524B2 ## CPC - H01M 4/667: {in the form of layers, e.g. coatings} - H01M 4/64: Carriers or collectors - H01M 4/66: Selection of materials - H01M 4/663: {containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres} - H01M 4/668: {Composites of electroconductive material and synthetic resins} - H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - H01M 50/50: Current conducting connections for cells or batteries - H01M 50/528: Fixed electrical connections, i.e. not intended for disconnection - H01M 50/533: characterised by the shape of the leads or tabs - H01M 50/534: characterised by the material 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 10/052: Li-accumulators - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - Y02E 60/10: Energy storage using 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 ## Abstract The present invention provides a means for improving the output performance of a battery. An electrical connection structure of the present invention includes a current collector which includes a conductive resin layer containing a polymer material and a conductive filler and a conductive member which is in electrical contact with the conductive filler. ## Claims ### Claim 1 An electrical connection structure comprising: a current collector which comprises a conductive resin layer comprising a polymer material and a conductive filler; and a conductive member which is in electrical contact with the conductive filler, wherein the conductive member contains a conductive material having a fiber shape, a plate shape, a shape including a lump, a mesh shape, or a granular shape having an average particle diameter of 0.01 to 10 μm, the electrical connection structure has a structure in which at least a part of the conductive member extends beyond the surface of the conductive resin layer and is present inside the conductive resin layer, and a contact resistance at a pressing pressure of 0.5 kg/cm2 is 2Ω or less. ### Claim 2 (depends on 1) The electrical connection structure according to claim 1, wherein the electrical connection structure is obtained by applying an ink comprising a conductive material to the current collector to form a coating film on the current collector. ### Claim 3 (depends on 1) The electrical connection structure according to claim 1, wherein the conductive member comprises at least one conductive material selected from the group consisting of 1) a metal having an ionization tendency lower than that of 2) iron, 3) titanium, 4) zirconium, 5) tantalum, 6) niobium, 7) an alloy having a main component selected from iron, titanium, zirconium, tantalum, niobium, or a metal having an ionization tendency lower than that of iron, or 8) a conductive carbon. ### Claim 4 (depends on 3) The electrical connection structure according to claim 3, wherein the conductive member further comprises a polymer material, and a content of the conductive material in the conductive member is more than a content of the conductive filler in the conductive resin layer. ### Claim 5 (depends on 1) The electrical connection structure according to claim 1, wherein the conductive member is comprised of a conductive carbon. ### Claim 6 (depends on 3) The electrical connection structure according to claim 3, wherein the conductive member further comprises an epoxy resin. ### Claim 7 (depends on 1) The electrical connection structure according to claim 1, wherein a conductive adhesive member is disposed between the conductive member and the current collector. ### Claim 8 (depends on 1) The electrical connection structure according to claim 1, wherein the conductive member has a laminate structure of two or more layers and a conductive adhesive member is disposed between at least two layers of the conductive member. ### Claim 9 (depends on 1) A method for producing the electrical connection structure according to claim 1, comprising: a step of applying an ink comprising the conductive material to the current collector to form a laminate in which a coating film is formed on the current collector. ### Claim 10 (depends on 9) The method for producing the electrical connection structure according to claim 9, further comprising a step of subjecting the laminate to heat pressing. ### Claim 11 (depends on 1) The electrical connection structure according to claim 1, wherein the metal having the ionization tendency lower than that of iron is selected from cobalt, nickel, tin, antimony, copper, silver, palladium, iridium, platinum, or gold. ### Claim 12 (depends on 1) The electrical connection structure according to claim 1, wherein the conductive material has the fiber shape, and the fiber shape has an average fiber length of 0.1 to 100 μm and an average diameter of 10 nm to 10 μm.