BATTERY CELL AND PROCESS FOR FORMING THE SAME

A battery cell and a process for forming the same. The battery cell includes a top cover structure including a pole including a main body, first bending portions and second bending portions; a bare aluminum sheet; and a connecting sheet. The first and second bending portions are arranged at two sides of the main body, and extend horizontally along a width direction. The first bending portion and the second bending portion projected on a same straight line along the width direction extend oppositely in the width direction. Two adjacent first or second bending portions arranged along a length direction bend oppositely in the width direction. A ratio of a length of the pole to a length of the battery cell is greater than or equal to 10%. The connecting sheet is provided with staggered first connecting holes. The second bending portions are buckled in the first connecting holes.