# US 2014/0154602 A1 · Electric storage device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0154602 A1 - Document ID: US20140154602A1 - Status: Published application - Kind: A1 - Application number: 14/129,975 - Filed: 2012-06-26 - Published: 2014-06-05 - Earliest claimed: 2011-06-30 - Inventors: Martin Michelitsch - Web page: https://patentgrep.com/patent/US20140154602A1 ## CPC - H01M 8/241: with solid or matrix-supported electrolytes - H01M 8/0258: characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant - H01M 8/0267: having heating or cooling means, e.g. heaters or coolant flow channels - H01M 8/0271: Sealing or supporting means around electrodes, matrices or membranes - H01M 10/6553: Terminals or leads - H01M 50/211: adapted for pouch cells - H01M 50/298: characterised by the wiring of battery packs - H01M 50/503: characterised by the shape of the interconnectors - H01M 50/514: Methods for interconnecting adjacent batteries or cells - H01M 50/522: Inorganic material - H01M 10/647: Prismatic or flat cells, e.g. pouch cells - H01M 50/512: Connection only in parallel - Y02E 60/10: Energy storage using batteries - Y02E 60/50: Fuel cells - 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 An electric storage device, secondary battery and high-voltage battery, for an electric vehicle, including at least one stack of storage cells that are strung together. At least two cell poles of adjacent storage cells are connected to one another by at least one cell connector in an electrically conductive manner. The connection between at least one cell pole and the cell connector and/or between at least one cell pole and at least one busbar and/or directly between two cell poles is formed by at least one cold surface-pressed clinch joining connection. ## Claims ### Claim at position 1 1-22. (canceled) ### Claim 23 An electric storage device, comprising: at least one stack of storage cells that are strung together, at least one cell connector, having a U-shaped or Y-shaped cross-section, to connect at least two cell poles of adjacent storage cells to one another in an electrically conductive manner, wherein a connection between at least one cell pole and the at least one cell connector is formed by at least one cold surface-pressed clinch-joining connection. ### Claim 24 (depends on 23) The electric storage device of claim 23, wherein the clinch-joining connection comprises a plurality of adjacently arranged joining points. ### Claim 25 (depends on 24) The electric storage device of claim 24, wherein the joining points are arranged in a plurality of rows spatially arranged, in an offset manner with respect to each other, one above the other. ### Claim 26 (depends on 23) The electric storage device of claim 23, wherein at least one joint of the clinch-joining connection has a circular, oval, rectangular or triangular cross-section. ### Claim 27 (depends on 23) The electric storage device of claim 23, wherein at least one clinch-joining connection is sealed in a gas-tight manner. ### Claim 28 (depends on 23) The electric storage device of claim 23, wherein at least one cell pole and at least one cell connector which is connected to the cell pole by way of the clinch-joining connection is composed of at least one metallic material. ### Claim 29 (depends on 23) The electric storage device of claim 23, wherein the at least one cell connector is composed of two different metallic materials. ### Claim 30 (depends on 23) The electric storage device of claim 23, wherein the at least one cell connector is arranged in an alternating fashion between successive storage cells. ### Claim 31 (depends on 23) The electric storage device of claim 23, further comprising a cooling-air channel in which is arranged at least one clinch-joining connection. ### Claim 32 (depends on 31) The electric storage device of claim 31, wherein the at least one clinch-joining connection comprises at least one joint protruding into a cooling-air flow of the cooling-air channel. ### Claim 33 (depends on 32) The electric storage device of claim 32, wherein at least one joint of the at least one clinch-joining connection is arranged to produce turbulences in the cooling-air channel. ### Claim 34 (depends on 23) The electric storage device of claim 23, further comprising at least one cell voltage monitoring cable with at least one cell pole connected in an electrically conductive manner by way of the clinch-joining connection. ### Claim 35 (depends on 23) The electric storage device of claim 23, wherein the electric storage device is one of an electric primary battery, a secondary battery, a capacitor or a fuel cell. ### Claim 36 (depends on 23) The electric storage device of claim 23, wherein at least one storage cell is formed by a pouch cell. ### Claim 37 (depends on 23) The electric storage device of claim 23, wherein: at least two cell poles have different thicknesses; and at least one cell pole has a plurality of cell pole layers which are connected to each other. ### Claim 38 (depends on 23) The electric storage device of claim 23, wherein at least one cell pole has an electroplating layer. ### Claim 39 (depends on 23) The electric storage device of claim 23, further comprising at least one voltage tapping element connected to at least one cell pole by way of a second clinch-joining connection. ### Claim 40 (depends on 39) The electric storage device of claim 39, wherein the at least one voltage tapping element extends over an entire region of the second clinch-joining connection. ### Claim 41 (depends on 23) The electric storage device of claim 23, wherein at least one cell connector comprises at least one mounting opening in a belt region spanning at least two cell poles. ### Claim 42 (depends on 41) The electric storage device of claim 41, wherein the clinch-joining connection is arranged between the at least one mounting opening and the storage cell.