Lg Chem, Ltd

Lg Energy Solution, Ltd.

Hye Dam Jo

Jong Hun Kim

Jeong Min Ha

Soo Young Kim

Hyun Wook Kim

Jang Hyuk Hong

Sang Won Bae

Ji Hee Bae

An electrode assembly is provided. The electrode assembly has a plurality of electrode plates having one or both sides of each of the electrode plates that are coated with an electrode active material and are stacked with a separator interposed between the respective electrode plates. The separator includes a surplus outer periphery of a size greater than the outer periphery of an electrode plate, an electrode tab which extends from the outer periphery of the electrode plate and protrudes outwardly beyond the outer periphery of the separator is formed on each electrode plate, and at least some of the separators forming the electrode assembly have an insulation-enhancing part for suppressing heat shrinkage of a separator formed in the surplus outer peripheries thereof which are adjacent to the respective electrode tabs.

Electrode assembly comprising separator having insulation-enhancing part formed on edge portion of electrode

Provided are a secondary battery in which a sealing part is prevented from damaged by external force and a method for manufacturing the same. The method for manufacturing the secondary battery includes a preparation process of preparing a pouch in which an electrode assembly and an electrolyte are accommodated, a bonding process of bonding a bonding area disposed on a circumferential portion of the pouch by using a bonding device; and a sealing process of sealing a portion of the outside of the bonding area of the pouch that is bonded in the bonding process by using a sealing device.

Secondary battery and method for manufacturing the same

Growing community of inventors

Daejeon, South Korea

Hye Dam Jo