Lg Chem, Ltd

Lg Energy Solution, Ltd.

Jung Shik Oh

Kyoung Won Kang

Ki Woong Kim

Chan Ki Park

Su Hyun Yun

Dong-Myung Kim

Ki-Woong Kim

Soonho Ahn

Sang Baek Ryu

Jun Woo Yun

Jeong Min Kim

Sangdeuk Kim

Xing Jin

Ga Young Baek

A secondary battery comprises an electrode assembly comprising radical units in which first and second electrodes are alternately laminated with a separator therebetween and a separation film surrounding the radical units to be repeatedly laminated, wherein the electrode assembly comprises a protection unit laminated on an outermost separation film disposed on the uppermost end or lowermost end of the separation film, the protection unit has a structure comprising a second protection electrode, a separator, and a first protection electrode which are successively laminated from the outermost separation film disposed on the uppermost end or lowermost end of the electrode assembly, the second protection electrode has a cross-sectional coating structure comprising a second collector and a second electrode active material portion coated with a second electrode active material on an inner surface of the second collector, and the inner surface is a surface facing a center of the electrode assembly.

Secondary battery

The electrode assembly comprises a first electrode unit in which an electrode and a separator are alternately stacked and a second electrode unit in which an electrode and a separator are alternately stacked, the second electrode unit having a size less than that of the first electrode unit and being stacked on the first electrode unit, wherein a tab bonding body manufactured by connecting an electrode tab provided in the first electrode unit to an electrode tab provided in the second electrode unit is disposed within a range of a width of the second electrode unit, and a leading electrode tab to which an electrode lead is connected is disposed on a portion of the first electrode unit.

Electrode assembly

Disclosed herein is a battery cell configured such that an electrode assembly, including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, is mounted in a receiving part formed in a battery case, a positive electrode terminal and a negative electrode terminal protrude from at least one side of the electrode assembly, and an insulative material is provided between the electrode assembly and the battery case.

Battery cell having means for preventing short-circuit

Disclosed herein is a battery pack including secondary batteries which can be charged and discharged. The battery pack is configured such that secondary batteries having different sizes are stacked to form a stair-like structure having a width and a height.

Battery pack of the stair-like structure

Growing community of inventors

Daejeon, South Korea

Jung Shik Oh