Lg Chem, Ltd

Lg Energy Solution, Ltd.

Cho Long Kim

Yong Chan Kim

Sang Hun Kim

Yong Su Choi

Sang Suk Jung

Won Pill Hwang

Hyung Kyun Yu

Soo Ji Hwang

Ji Hoon Lee

Min Hyeong Kang

The present invention relates to a battery cell. The battery cell comprises: an electrode assembly provided with an electrode tab; a case which accommodates the electrode assembly and of which at least a portion of an edge is sealed to provide a sealing surface; an electrode lead coupled to the electrode tab and led out of the case; a lead film disposed on each of top and bottom surfaces of the lead electrode disposed on the sealing surface of the case and coupled together with the sealing surface; and a main gas discharge tube disposed in the case and having one end buried in the lead film.

Battery cell having main gas discharge tube and method for manufacturing the same

Provided are a lithium secondary battery, which includes an electrode assembly, a battery case accommodating the electrode assembly, a surface layer comprising an engineering plastic located on the outer side of the battery case, and lead terminals connected with the electrode assembly and drawn out of the battery case, and a method of fabricating the same.

Lithium secondary battery and method of fabricating the same

The present invention relates to an apparatus for sealing a secondary battery. The apparatus comprises: a sealing member thermally fusing and sealing a sealing surface of a pouch in which an electrode assembly is accommodated; and a cooling member cooling the sealing surface.

Apparatus for sealing secondary battery

A battery cell includes an electrode assembly and a battery case. The electrode assembly includes a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode. The battery case includes an upper case and a lower case, at least one of the upper case and the lower case being provided with a receiving part, in which the electrode assembly is mounted. One end of each of electrode tabs extending from electrode plates of the electrode assembly is coupled to a corresponding end of an electrode lead, which protrudes outward from the battery case. The electrode lead is provided with at least one notch part configured to rupture in response to expansion deformation of the battery case when the pressure in the battery cell increases to achieve the electrical cutoff of the battery.

Pouch-typed battery cell comprising electrode lead having current breaking function

The present invention relates to a sealing apparatus sealing a sealing part of a battery case at which an electrode lead coupled to an electrode assembly is disposed. The sealing apparatus comprises: a thermal fusion member applying heat and a pressure to the sealing part of the battery case, at which the electrode lead is disposed, to seal the sealing part; and a temperature rising prevention member supported on a front end of the electrode lead to cool the sealing part through the electrode lead, thereby preventing the sealing part from increasing in temperature.

Sealing apparatus for secondary battery

Provided is a battery pack. The battery pack includes a plurality of battery cells, each of which is provided with an electrode tab, an electrode lead including first and second lead parts respectively connected to the electrode tabs of the adjacent battery cells and a connection part connecting the first and second lead parts to each other, and a bus bar to which the first and second lead parts are coupled and connecting the plurality of battery cells to each other in series or parallel.

Growing community of inventors

Daejeon, South Korea

Cho Long Kim