Lg Energy Solution, Ltd.

Hayoung Heo

Hyoung Kwon Kim

Duk Hyun Ryu

Jeeeun Kim

Pil Kyu Park

Sang Uck Kim

Namwon Kim

A jelly-roll type of electrode assembly in which a negative electrode sheet, a positive electrode sheet, and a separation membrane interposed between the negative electrode sheet and the positive electrode sheet are wound together is provided. The electrode assembly also includes: at least one electrode tab attached to the negative electrode sheet or the positive electrode sheet and at least a portion extending outside; and a heat radiation tape adhered to the electrode. The electrode tab to which the heat radiation tape is adhered is positioned between the center part of the wound electrode assembly and an external circumferential surface, or on the external circumferential surface, the heat radiation tape includes a heat diffusion layer, and the heat diffusion layer includes at least one of graphite and a metal foil.

Electrode assembly and rechargeable battery including the same

A secondary battery is provided. The secondary battery includes an electrode assembly including a negative electrode sheet, a positive electrode sheet, and a separation membrane; and a heat radiation tape disposed at an external circumferential surface of the electrode assembly. The heat radiation tape includes a heat diffusion layer, and the heat diffusion layer includes at least one of graphite and a metal foil.

Secondary battery and device including the same

The present invention provides a secondary battery including: an electrode assembly ('jelly-roll') having a structure in which a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode are wound together; a can main body inside of which a hollow having an open side is formed and in which the electrode assembly is accommodated in a shape surrounding the hollow; and a top cover mounted on an open upper end portion of the can main body to seal the can main body, wherein one of a bottom portion of the can main body and the top cover may be formed with a through-hole communicating with the hollow of the can main body, and at least 50% of a total volume of the hollow is filled with a thermally conductive resin, and provides a secondary battery pack including the secondary battery.

Growing community of inventors

Daejeon, South Korea

Hayoung Heo