Lg Chem, Ltd

Lg Energy Solution, Ltd.

Eun Sun Choi

Jin Soo Lee

Sung Pil Yoon

Nam Won Kim

So Ra Lee

A secondary battery includes: a first electrode provided with a first collector and a first electrode active material applied on at least one surface of the first collector; and a second electrode provided with a second collector and a second electrode active material applied on at least one surface of the second collector, wherein an uneven coating portion at which the first electrode active material irregularly increases in amount and is applied is provided on at least one of a coating start portion or a coating end portion of the first electrode active material, and an inactive coating portion configured to cover the uneven coating portion is provided on at least one of a coating start portion or a coating end portion of the second electrode active material. A method of manufacturing the secondary battery is also provided.

Secondary battery and method for manufacturing the same

Disclosed is a secondary battery including a current blocking device. According to the present invention, the secondary battery in which when the secondary battery increases in volume due to overcharging, current flowing to the secondary battery is interrupted by using expansion force due to the increase in volume to improve safety and reliability may be manufactured.

Growing community of inventors

Daejeon, South Korea

Eun Sun Choi