Samsung Sdi Co., Inc.

Robert Bosch

Sangeun Cheon

Sangwoo Lee

Jongseok Moon

Dongwook Kim

Sangwon Byun

Sehwan Moon

Zin Min Park

Tatsuya Hashimoto

Chiyoung Lee

Seokyoon Yoo

Sungbae Kim

An electrode assembly includes a first electrode plate having a first electrode active material layer and a first electrode uncoated portion, a second electrode plate having a second electrode active material layer and a second electrode uncoated portion, and a separator between the first electrode plate and the second electrode plate, and a case accommodating the electrode assembly, where a ceramic layer having a smaller thickness than the first electrode active material layer is on the first electrode uncoated portion.

Electrode assembly and secondary battery using the same

A secondary battery includes an electrode assembly; a case accommodating the electrode assembly; a cap plate sealing the case; an injection opening in the cap plate; and an exhaustion opening in the cap plate and being spaced from the injection opening.

Secondary battery

A secondary battery and an electric vehicle or hybrid electric vehicle, the secondary battery including a case; an electrode terminal coupled to an electrode assembly in the case; a nut fastened with the electrode terminal, the nut having a thread on an inner circumferential surface thereof; a cap plate hermetically sealing the case, the electrode terminal extending through the cap plate; and a seal gasket between the electrode terminal and the cap plate, the seal gasket being compressed by the nut, wherein the electrode terminal includes a flange part below a bottom surface of the cap plate, an insertion part passing through a through-hole of the cap plate, and a fastening part having a thread recess engaged with the thread of the nut, and wherein the nut is rotatably fastened with the fastening part of the electrode terminal, such that a front end of the thread contacts a back end of the thread recess when viewed from a rotation direction of the nut.

Secondary battery having electrode terminal fastened with nut

A secondary battery including an electrode assembly, a can accommodating the electrode assembly, a cap plate coupled to the can, an electrolyte injection unit including an injection hole penetrating the cap plate and an injection ring protruding from the injection hole, and a stopper to seal the electrolyte injection unit.

Growing community of inventors

Yongin-si, South Korea

Sangeun Cheon