Patent ID: 9231281
Filing Date: 2016-01-05
CPC Classification: H01M,Y02E

Claim Text:
1. A button cell closed without flanging comprising: a housing formed of two housing halves comprising a cell cup and a cell lid, an electrically insulating seal separating the cell cup and the cell lid, an electrode-separator assembly comprising at least one positive electrode and at least one negative electrode arranged inside the housing, metal foil diverters electrically connecting the at least one positive electrode and the at least one negative electrode to the housing halves, and a thermal fuse integrated into one of the metal foil diverters or arranged between a current collector of one of the electrodes and a metal foil diverter connecting the electrode to the housing, wherein the cell cup comprises a bottom region, a shell region, a border region arranged between the bottom region and the shell region, and a cut edge, the cell lid comprises a lid region, a shell region, a border region arranged between the lid region and the shell region, and a cut edge, the cell lid is inserted into the cell cup, the shell region of the cell cup has a substantially constant radius in a direction of the cut edge, the housing formed by the cell cup and the cell lid has a substantially planar bottom region and a substantially planar lid region substantially parallel thereto, the electrode-separator assembly is configured as a spiral winding and is positioned in the housing such that end face sides of the electrode-separator assembly are oriented in a direction of the substantially planar bottom region and the substantially planar lid region, and the metal foil diverters form a flat layer between an inner face of the housing halves and the end face sides of the electrode-separator assembly.