# US 2021/0280951 A1 · Method for arranging a contact element, contact element and battery stack > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0280951 A1 - Document ID: US20210280951A1 - Status: Published application - Kind: A1 - Application number: 16/614,700 - Filed: 2018-05-11 - Published: 2021-09-09 - Earliest claimed: 2017-05-18 - Assignees: LION Smart GmbH - Applicants: LION Smart GmbH - Inventors: Daniel QUINGER; Christian BEHLEN; Tobias MAYER - Web page: https://patentgrep.com/patent/US20210280951A1 ## CPC - H01M 50/516: by welding, soldering or brazing - H01M 50/503: characterised by the shape of the interconnectors - H01M 50/574: Devices or arrangements for the interruption of current - H01M 2200/103: Fuse - 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 A method arranges a contact element on a battery cell of a battery layer of a battery stack for a battery device of a vehicle. Further, a contact element for a battery cell of a battery layer of a battery stack for a battery device of a device includes a contact plate section, a transition section and a positive pole section. The contact plate section surrounds the transition section and the transition section surrounds the positive pole section. The contact plate section and the positive pole section are arranged at a distance to one another and in parallel or at least substantially in parallel. Still further, battery stack having at least one battery layer with at least one battery cell includes a contact element that is arranged on the battery cell. ## Claims ### Claim 1 A method for arranging a contact element on a battery cell of a battery plane of a battery stack for a battery device of a vehicle, the method comprising the following steps: a) providing a contact element having at least a contact plate portion, a transition portion and a positive pole portion, wherein the contact plate portion surrounds the transition portion and the transition portion surrounds the positive pole portion, and further wherein the contact plate portion and the positive pole portion are spaced apart from each other and are arranged parallel or at least substantially parallel, b) arranging the contact element provided in step a) on the battery cell of the battery plane, wherein when the contact element is positioned, the contact plate portion is positioned on a contact plate of the battery plane and the positive pole portion is positioned on a positive pole of the battery cell of the battery plane; and c) introducing at least one security opening into a perforation region of the transition portion to establish at least one security section in the transition portion. ### Claim 2 (depends on 1) The method according to claim 1, wherein in step c) a single security opening is introduced and thereby a single security portion is established. ### Claim 3 (depends on 2) The method according to claim 2, wherein the security opening is annular in sections, wherein an extension of the security opening over 75% corresponds to the extension of a full ring. ### Claim 4 (depends on 1) The method according to claim 1, wherein the introducing the at least one security opening in step c) is performed by laser perforation. ### Claim 5 (depends on 4) The method according to claim 4, wherein material of the perforation region is evaporable by the laser perforation, this evaporable material preferably being sucked off. ### Claim 6 (depends on 1) The method according to claim 1, wherein, when positioned in step b, the contact plate portion of the contact element on the contact plate and the positive pole portion of the contact element is fixed to the positive pole of the battery cell. ### Claim 7 (depends on 6) The method according to claim 6, wherein the contact plate portion of the contact element is attached to the contact plate and the positive pole portion is attached to the positive pole of the battery cell by a securing device. ### Claim 8 (depends on 7) The method according to claim 7, wherein the securing device is used for introducing the at least one security opening in step c). ### Claim 9 (depends on 1) The method according to claim 1, wherein an insulation volume of the battery plane, which at least on one side is delimited at least in sections by the transition portion, is at least partially filled with an insulation material. ### Claim 10 (depends on 9) The method according to claim 9, wherein the insulating material has at least property selected from the group consisting of: flowable, free-flowing, hardening, and dimensionally stable. ### Claim 11 A contact element for a battery cell of a battery plane of a battery stack for a battery device of a vehicle, comprising a contact plate portion, a transition portion and a positive pole portion, the contact plate portion surrounding the transition portion and the transition portion surrounding the positive pole portion, and further wherein said contact plate portion and said positive pole portion are spaced apart from each other and positioned parallel or at least substantially parallel, wherein said transition portion has a perforation portion for introducing at least one security opening to establish at least one security portion. ### Claim 12 (depends on 11) The contact element according to claim 11, wherein the contact element is positioned by: a) providing a contact element having at least a contact plate portion, a transition portion and a positive pole portion, wherein the contact plate portion surrounds the transition portion and the transition portion surrounds the positive pole portion, and further wherein the contact plate portion and the positive pole portion are spaced apart from each other and are arranged parallel or at least substantially parallel, b) arranging the contact element provided in step a) on the battery cell of the battery plate, wherein when the contact element is positioned, the contact plate portion is positioned on a contact plate of the battery plane and the positive pole portion is positioned on a positive pole of the battery cell of the battery plane; and c) introducing at least one security opening into a perforation region of the transition portion to establish at least one security section in the transition portion. ### Claim 13 (depends on 11) The contact element according to claim 11, wherein the perforation portion consists at least in sections of an evaporable material. ### Claim 14 (depends on 11) The contact element according to claim 11, wherein in a position of the contact element positioned on the battery cell of the battery plane, the transition portion at least on one side at least in sections delimits one side of an insulation volume of the battery plane. ### Claim 15 (depends on 11) The contact element according to claim 11, wherein the contact element has fastening means for fastening a negative pole of a battery cell of a further battery of the battery stack, the fastening means preferably being positioned on the contact plate portion. ### Claim 16 A battery stack having at least one battery plane with at least one battery cell, the battery stack comprising: one contact element being positioned on the battery cell, wherein the contact element includes a contact plate portion, a transition portion and a positive pole portion, the contact plate portion surrounding the transition portion and the transition portion surrounding the positive pole portion, and further wherein said contact plate portion and said positive pole portion are spaced apart from each other and positioned parallel or at least substantially parallel, wherein said transition portion has a perforation portion for introducing at least one security opening to establish at least one security portion wherein the contact element is positioned on the battery cell by: a) providing a contact element having at least a contact plate portion, a transition portion and a positive role portion, wherein the contact plate portion surrounds the transition portion and the transition portion surrounds the positive pole portion, and further wherein the contact plate portion and the positive pole portion are spaced apart from each other and are arranged parallel or at least substantially parallel, b) arranging the contact element provided in step a) on the battery cell of the battery plane, wherein when the contact element is positioned, the contact plate portion is positioned on a contact plate of the battery plane and the positive pole portion is positioned on a positive pole of the battery cell of the battery plane; and c) introducing at least one security opening into a perforation region of the transition portion to establish at least one security section in the transition portion.