Samsung Sdi Co., Inc.

Soon-Ki Woo

Kwang-Soo Kim

Chang-Seob Kim

Won-Seog Oh

Jin-Wook Kim

Jae-Il Seong

Hideaki Yoshio

Jai-Hwan Joo

A secondary battery including a cap assembly, the cap assembly including a cap plate having an electrolyte injection hole. The electrolyte injection hole includes a tapered portion having a roughened surface. The secondary battery further includes a sealing member located in the electrolyte injection hole, to seal the electrolyte injection hole. The sealing member includes a cap and a resin coated on the cap.

Secondary battery having electrolyte injection hole and method of fabricating the same

An electrode assembly including a first electrode strip having a first electrode collector coated with at least a first electrode active material, an exposed portion of the first electrode collector attached with a first electrode tab; a second electrode strip having a second electrode collector coated with at least a second electrode active material and is rolled together with the first electrode strip, an exposed portion of the second electrode collector is attached with a second electrode tab; and at least one inter-electrode strip separator is positioned between the first and second electrode strips, wherein at least one sheet of protective separator, which is extended from the inter-electrode strip separator, is further positioned on a side of the first electrode strip attached with the first electrode tab.

Jelly-roll type electrode assembly and secondary battery including the same

Growing community of inventors

Suwon-si, South Korea

Soon-Ki Woo