Abstract: A battery may include: a negative electrodes including a negative electrode including a first tab portion, and a negative electrode current collector including a first recess; positive electrodes arranged alternately with the negative electrodes, and including a positive electrode including a second tab portion, and a positive electrode current collector including a second recess; a separator between two adjacent electrodes among the negative electrodes and the positive electrodes; a first lead tab in the first recess; and a second lead tab in the second recess, wherein the first tab portion is welded to the first lead tab so as to form a first welding portion located in the first recess, and the second tab portion is welded to the second lead tab so as to form a second welding portion located in the second recess.

Abstract: An electronic device may include a processor, and a battery configured to supply power to the processor. The battery may include multiple first electrodes including first tabs configured to protrude toward a first direction, multiple second electrodes including second tabs configured to protrude toward the first direction, and a separator configured to restrict contact between the multiple first electrodes and the multiple second electrodes. The separator may include a first separator configured to be folded in a second direction perpendicular to the first direction or a fourth direction opposite to the second direction, the first separator including multiple through-holes configured to accommodate the first tabs and the second tabs, and a second separator configured to be folded in the first direction or a third direction opposite to the first direction, the second separator being alternately stacked with the first separator. In addition, various embodiments may be possible.

Abstract: A battery is provided. The battery includes a negative electrode including a first coating portion coated with a negative electrode active material and a first uncoated portion disposed adjacent to the first coating portion, a positive electrode disposed to face the negative electrode and including a second coating portion coated with a positive electrode active material and a second uncoated portion disposed adjacent to the second coating portion, a first separator disposed between one surface of the negative electrode and one surface of the positive electrode, and a second separator disposed on another surface of the negative electrode. The positive electrode, the negative electrode, and the at least one of the first separator and the second separator may be prepared in a roll shape formed by winding.