Battery cell and device and method for manufacturing the same, battery, and power consumption device

A method for manufacturing a battery cell, comprising:

• providing a shell and an end cap, wherein the shell has an opening;
• covering the opening with the end cap;
• providing an insulating film;
• wrapping an outer surface of the shell with a main body portion of the insulating film, and wrapping a side of the end cap facing away from interior of the shell with a flanging portion of the insulating film;
• providing an end cap patch;
• bonding the end cap patch to the side of the end cap facing away from the interior of the shell through a first glue layer, wherein the first glue layer comprises a first portion and a second portion which are provided continuously, the first portion is provided around the second portion, the first portion is provided between the flanging portion and the end cap patch and bonds the flanging portion and the end cap patch, the second portion is provided between the end cap and the end cap patch and bonds the end cap and the end cap patch, and the first portion has a thickness smaller than that of the second portion.