| CPC H01M 50/154 (2021.01) [H01M 10/0468 (2013.01); H01M 50/107 (2021.01); H01M 50/116 (2021.01); H01M 50/14 (2021.01); H01M 50/184 (2021.01); H01M 50/46 (2021.01); H01M 50/531 (2021.01); H01M 50/536 (2021.01); H01M 50/636 (2021.01); H01M 50/668 (2021.01); H01M 10/0525 (2013.01)] | 24 Claims |
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1. A cell, comprising:
an electrode assembly, the electrode assembly comprising a central hole, at least one positive electrode, at least one negative electrode, and at least one diaphragm separating the at least one positive electrode from the at least one negative electrode; the at least one positive electrode, the at least one negative electrode and the at least one diaphragm being disposed around the central hole in a spiral winding manner; and the central hole having a diameter of greater than 0 and smaller than that of the cell;
a pin assembly, the pin assembly being disposed in the central hole for polarity separation; the pin assembly comprising a housing comprising an axial through hole; the housing being partially or fully disposed in the central hole; the pin assembly further comprising an insulating part for separating a polarity of the cell and at least one electrode lead; the insulating part being disposed in the axial through hole; the at least one electrode lead passing through the insulating part and being connected to the at least one positive electrode or the at least one negative electrode for separating the polarity of the cell; and
a cell house hermetically connected to the housing, thus forming a ring-shaped seal cavity for accommodating the electrode assembly.
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