Secondary battery and the fabrication method thereof

A secondary battery, comprising:

• an electrode assembly comprising a first electrode, a second electrode, and a separator interposed between the first electrode and the second electrode;
• a container receiving the electrode assembly, the container having an opening;
• a cap coupled with the opening of the container;
• and
• an injection-molded insulating member mounted between the electrode assembly and the cap, the insulating member comprising a plate and a sidewall protruding from the plate in a direction toward the cap, the plate making an obtuse angel with the outer surface of the sidewall, a spot of injecting raw material being disposed in the side of the insulating member facing to the electrode assembly.

A fabrication method of a secondary battery, comprising:

• preparing an electrode assembly;
• inserting the electrode assembly into a container;
• preparing an insulating member by inserting a raw material into a mold from the side of the insulating member to be faced with the electrode assembly, solidifying the inserted raw material, and removing the solidified material from the mold;
• positioning the insulating member over the electrode assembly;
• and
• coupling a cap to an opening of the container with the insulating member positioned over the electrode assembly.