Method and system for manufacturing battery cell
View Patent ↗Disclosed is a method of manufacturing a bi-cell of a secondary battery. The bi-cell is configured such that, among electrodes of the bi-cell, a first electrode has a reference surface and is formed to have a designated thickness, a circumference of the reference surface is defined by at least four side parts, and, among the at least four side parts, a first side part and a second side part are symmetrical to each other with respect to a center of the reference surface, and a third side part and a fourth side part are symmetrical to each other with respect to the center of the reference surface, and the method includes adhering first compensation members to the first side part and the second side part simultaneously or at different times, and adhering second compensation members to the third side part and the fourth side part simultaneously or at different times.
1 . A method of manufacturing a bi-cell of a battery, wherein the bi-cell includes a first electrode that has a reference surface and is formed to have a designated thickness, wherein a circumference of the reference surface is defined by at least four side parts, the at least four side parts having a first side part and a second side part that are symmetrical to each other with respect to a center of the reference surface, and a third side part and a fourth side part that are symmetrical to each other with respect to the center of the reference surface, the method comprising:
adhering first compensation members to the first side part and the second side part simultaneously or at different times; and
adhering second compensation members to the third side part and the fourth side part simultaneously or at different times.
2 . The method of claim 1 , wherein the first electrode is formed from an electrode sheet, and the first compensation members are formed from a first continuous body of compensation member; and
wherein adhering of the first compensation members comprises:
unwinding the electrode sheet from an electrode sheet roll, and
unwinding the first continuous body of compensation member from a first compensation member roll, and adhering the unwound first continuous body of compensation member to each of the first side part and the second side part.
3 . The method of claim 2 , wherein adhering of the first compensation members further comprises:
cutting into predetermined lengths the electrode sheet having the first continuous body of compensation member that is adhered to the first side part and the second side part, to thereby form a plurality of first electrodes wherein the first compensation members are adhered to each of the first electrodes.
4 . The method of claim 3 , wherein adhering of the second compensation members comprises:
unwinding a second continuous body of compensation member from a second compensation member roll,
forming the second compensation members by cutting the second continuous body of compensation member into predetermined lengths; and
transporting the second compensation members and thereafter adhering the second compensation members to the third side part and the fourth side part of each of the first electrodes.
5 . The method of claim 4 , further comprising:
stacking a second electrode on a region of the reference surface defined by the first compensation members and the second compensation members,
wherein the first electrode and the second electrode have different polarities.
6 . The method of claim 5 , wherein the first electrode is a negative electrode, and the second electrode is a positive electrode.
7 . The method of claim 1 , wherein adhering of the first compensation members to the first side part and the second side part is performed prior to adhering of the second compensation members to the third side part and the fourth side part.