Samsung Sdi Co., Inc.

Seungho Kwak

Yongchul Seo

Sangwon Byun

Minhyung Guen

Wonjun Lee

Yunki Baik

Sangkyoon Park

A secondary battery, including a case including an internal space; an electrode assembly in the case, the electrode assembly having a current collection tab drawn from a positive electrode plate, a current collection tab drawn from a negative electrode plate, and a separator between the positive electrode plate and the negative electrode plate; an electrode terminal electrically connected to each of the current collection tab; an insulation plate between the electrode assembly and the electrode terminal; and a cap plate exposing the electrode terminal, the cap plate sealing the case, the insulation plate including one or more protrusions on a surface facing the cap plate.

Secondary battery

A rechargeable battery includes an electrode assembly in a case, a terminal which passes through and protrudes from a cap plate, and a current collector plate in the case. The current collector plate electrically connects the electrode assembly and the terminal portion. The current collector plate has a fuse area which includes a fuse hole having a substantially elongated shape with round sides oriented in a widthwise direction of the current collector plate.

Rechargeable battery

A secondary battery includes: an electrode assembly; a case accommodating the electrode assembly and having an opening at one side thereof; a cap plate closing the opening of the case and having a first recessed groove at one end thereof and a second recessed groove at another end thereof, both the first and second recessed grooves being at an outer surface of the cap plate; a first terminal unit including: a first electrode terminal electrically connected to a first electrode plate and protruding outside of the case; a first terminal plate electrically connected to the first electrode terminal; and an insulation member coupled to the cap plate in the first recessed groove and surrounding peripheral surfaces and a bottom surface of the first terminal plate; and a second terminal unit electrically connected to the second electrode plate and coupled to the cap plate in the second recessed groove.

A rechargeable battery includes an electrode assembly having a first electrode tab and a second electrode tab; a first current collection plate electrically connected to the first electrode tab; a case accommodating the electrode assembly; a cap assembly including a cap plate sealing the top-end opening of the case; a connecting pin located between the first current collection plate and the cap plate and electrically connecting the first current collection plate and the cap plate; and a first terminal unit electrically contacting the first current collection plate and protruding through the cap plate.

A rechargeable battery is provided, which includes a protection layer with an inversion plate, thereby improving safety by preventing the inversion plate from malfunctioning. In one example embodiment, the rechargeable battery includes an electrode assembly including a first electrode plate, a second electrode plate, and a separator disposed between the first electrode plate and the second electrode plate, a case accommodating the electrode assembly, and a cap assembly coupled to the case, wherein the cap assembly comprises a cap plate sealing the case and having a short-circuit opening, an inversion plate installed in the short-circuit opening of the cap plate, and a connection plate installed to cover the short-circuit opening of the cap plate, and a protection layer having a higher melting point than the cap plate is formed under the inversion plate.

A rechargeable battery includes fuses inside and outside a cell, thereby improving safety by preventing abnormal breakdown from occurring in the cell due to an electric short circuit. The rechargeable battery includes an electrode assembly including a first electrode plate, a second electrode plate and a separator between the first electrode plate and the second electrode plate, a case accommodating the electrode assembly, and a first electrode terminal and a second electrode terminal electrically connected to the first electrode plate and the second electrode plate and protruding to the outside of the case. One of the first electrode terminal and the second electrode terminal includes a fuse part.

Growing community of inventors

Yongin-si, South Korea

Seungho Kwak