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US Patent 11791493 Button cells and method of producing same

Patent 11791493 was granted and assigned to VARTA on October, 2023 by the United States Patent and Trademark Office.

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Contents

Is a
Patent
Patent

Patent attributes

Patent Applicant
VARTA
VARTA
Current Assignee
VARTA
VARTA
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
11791493
Patent Inventor Names
Eduard Pytlik
Winfried Gaugler
Jürgen Lindner
Ulrich Barenthin
Date of Patent
October 17, 2023
Patent Application Number
16792420
Date Filed
February 17, 2020
Patent Citations
‌
US Patent 7341802 Feedthrough assembly and method
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US Patent 7108941 Flat battery and production method therefor
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US Patent 7195840 Cell structure for electrochemical devices and method of making same
‌
US Patent 7276092 Electrochemical element in the form of a button cell, and a method for producing an electrochemical element
‌
US Patent 8048570 Compliant seal structures for protected active metal anodes
‌
US Patent 8236441 Battery cell design and methods of its construction
‌
US Patent 8435658 Sealed cell with terminal cap and safety valve
‌
US Patent 8465860 Lithium cell
...
Patent Primary Examiner
‌
Anca Eoff
Patent abstract

A method for producing a button cell includes providing a cell cup, a cell top and an electrode-separator assembly winding, the electrode-separator assembly winding having a positive electrode and a negative electrode. An electrically insulating seal is applied at least to an outer portion of the cell top casing. The electrode-separator assembly winding is inserted into the cell top. The cell top is inserted into the cell cup to form a housing. A pressure is applied in a radial direction perpendicular to an axis of the electrode-separator assembly winding so as to seal the housing.

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