Samsung Sdi Co., Inc.

Wan-Mook Lim

Myung-Ro Lee

Kyu-Nam Han

Jin-Hee Kim

Hae-Kwon Yoon

Hyo-Rim Bak

Jin-hee Kim

Jin-Bum Kim

Myoung-Han Ryu

A rechargeable battery includes a plurality of electrode assemblies including positive and negative electrodes separated by a separator and a pair of electrode tabs protruding to both sides. A case receives the plurality of electrode assemblies. First and second current collecting plates cover openings formed on both sides of the case. First and second insulation plates are respectively disposed between the plurality of electrode assemblies and the first and second current collecting plates. The pair of electrode tabs at one side of the electrode assemblies pass through a first through hole formed in the first insulation plate and the pair of electrode tables at the other side of the electrode assemblies pass through a second through hole formed in the second insulation plate.

Rechargeable battery with collector plates having insulators and conductors

A secondary battery including an electrode assembly comprises: an outermost electrode an electrode assembly comprising an outermost electrode, an inner electrode, and a separator disposed between the outermost and inner electrodes, wherein the outermost electrode, the inner electrode and the separator are wound together; a case that accommodates the electrode assembly; and a cap assembly coupled to the case, wherein the outermost electrode and the separator disposed under the outermost electrode extend beyond the inner electrode disposed under the separator in a lengthwise direction of the winding by 3 cm or greater.

Secondary battery including electrode assembly having excellent jelly roll structure

An electrode assembly for a battery. The electrode assembly includes a positive electrode with a positive electrode active material layer and a negative electrode with a negative electrode active material layer. The assembly further includes a separator that has a porous layer formed of a ceramic material and a binder and a polyolefin resin layer. The porous layer has a thickness of about 4 to 6 &#x3bc;m and the polyolefin resin layer has a thickness of about 12 to 16 &#x3bc;m.

Electrode assembly and secondary battery having the same

A secondary battery that includes a cylindrical can, an electrode assembly arranged in a jelly-role configuration within the cylindrical can and having a core extending about an axis thereof and a hollow center pin arranged within the core of the electrode assembly and having an inner diameter and an outer diameter, the outer diameter forming ones of a pair of radial lengths diametrically opposite from each other, each of said pair of radial lengths extending from the outer diameter of the center pin to an external surface of the core, wherein the sum of the pair of radial lengths is in the range of 5% to 54% of the inner diameter of the center pin.

Cylindrical secondary battery

A secondary battery including an electrode assembly including a positive electrode including a positive electrode active material layer, a negative electrode including a negative electrode active material layer, a separator separating the positive and negative electrodes from each other, and an electrolyte. The separator includes a porous layer comprising a ceramic material and a binder, and a polyolefin-based resin layer. The porous layer has a centerline average roughness (Ra) of 0.3 &#x3bc;m to 1.5 &#x3bc;m, the polyolefin-based resin layer has a porosity of 30% to 60%, and the polyolefin-based resin layer has a compressibility of 4% to 10%.

Growing community of inventors

Yongin-si, South Korea

Wan-Mook Lim