Lg Energy Solution, Ltd.

Lg Chem, Ltd

Han Sol Park

Joo Hwan Sung

Hyeon Min Song

Younguk Park

Minsu Cho

Sunghae Park

Sue Jin Kim

Jinsu Jang

Junghyun Choi

Jingoo Kwak

Sang Uck Kim

Byung Hun Oh

Jung Koo Kang

Min Su Cho

Min Gi Jeong

Ik Su Kang

Mingi Jeong

The present disclosure relates to an anode for a lithium secondary battery, wherein an anode material layer is formed on at least one surface of an anode current collector, and

Anode including graphite and silicon-based material having different diameters and lithium secondary battery including the same

A secondary battery includes an electrode assembly, and a battery case accommodating the battery case together with an electrolytic solution. The battery case includes a metal. The battery case is opened in its upper part; and a cap assembly that is coupled to the opened upper part of the can body. The can body includes a beading part that is bent inward at the upper part of the housing part, and a crimping part that is bent in a direction in which the cap assembly is located at an upper part of the beading part. At least one of the bottom part or the crimping part of the can body has a metal member inserted therein. The metal member has a lower melting point than the metal of the can body.

Secondary battery in which a metal member is inserted into can body to improve safety

A cylindrical secondary battery includes a jelly-roll type electrode assembly having a structure in which a long sheet type positive electrode and a long sheet type negative electrode are wound with a separator interposed between the positive electrode and the negative electrode. The cylindrical secondary battery also includes a cylindrical battery case configured to receive the jelly-roll type electrode assembly, and a piezoelectric element configured to generate electrical energy due to the volumetric expansion of the jelly-roll type electrode assembly caused by charging and discharging the jelly-roll type electrode assembly.

Cylindrical secondary battery having piezoelectric element disposed therein

A battery pack includes an electrode assembly having a cathode, an anode, and a separator interposed therebetween, a first pack case having the electrode assembly and an electrolyte disposed therein, a second pack case with the first pack case disposed therein and a portion of the interior surface separated from the first pack case exterior surface, a fire extinguishing agent disposed between the exterior surface of the first pack case and the interior surface of the second pack case and a cap assembly that simultaneously seals an open surface of the first and second pack cases when the first pack case is disposed in the second pack case. A first venting portion is configured to open to enable the fire extinguishing agent to flow into the interior of the first pack case when the pressure within the first pack case is equal to or greater than a critical pressure.

Battery pack comprising fire extinguishing agent

Growing community of inventors

Daejeon, South Korea

Han Sol Park