Lg Chem, Ltd

Korea Advanced Institute of Science and Technology

Sk Innovation Co., Ltd.

Taewoo Kim

Dong Hyun Ko

Mi Young Kim

Min Ji Choi

Sungshik Eom

Dawon Jung

Tae Yun Kim

Hyunseok Kim

Tae Youn Kim

Youngju Park

Won Jung Lee

Jeongchan Park

Jeehoon Jeon

Jong Yoon Chae

Dongmin Choi

Woojin Lee

GunWoo Moon

Jaihyun Choi

Seunghyun Choi

It is provided a novel LLC resonant converter with high reliability and the operation method thereof. The LLC resonant converter proposed in the present invention includes an original converter including a primary side circuit on which two half-bridge cells are connected in parallel and a secondary side circuit on which two half-bridge cells are connected in series and a redundant converter having the same configuration with the original converter, and connected with the original converter at a midpoint of a secondary winding.

LLC resonant converter with high reliability

A method for preparing trimethylolpropane, the method including: subjecting dimethylolbutanal (DMB) to a hydrogenation reaction in the presence of a metal catalyst and an alcohol solvent. During the hydrogenation reaction, a weight ratio of the alcohol solvent based to dimethylolbutanal is 2 to 10.

Method for preparing trimethylolpropane

A method for producing dimethylolbutanal, the method including: (A) distilling a raw material comprising dimethylolbutanal (DMB) in a distillation column; (B) separating the distilled raw material in the distillation column into a low boiling point component, dimethylolbutanal, and a high boiling point component; and (C) refluxing a portion or all of the high boiling point component to the distillation column by heating the portion or all of the high boiling point component, in which the dimethylolbutanal is separated from a side cut of the distillation column.

Method for producing dimethylolbutanal and distillation apparatus for producing same

A polymer resin compound, a photosensitive resin composition for a black bank comprising the polymer resin compound, and a method for manufacturing a black bank. The method comprises coating the photosensitive resin composition on a substrate to form a photosensitive resin film; exposing and developing the photosensitive resin film to pattern the coated photosensitive resin film; and curing the patterned photosensitive resin film.

Polymer resin compound and photosensitive resin composition for black bank comprising same

Provided is an energy storage apparatus capable of freely adjusting an energy storage capacity by including a integrated battery platform including a battery, a power relay assembly, and a battery management system; and a battery tray including a battery and coupled to the battery platform to connect the batteries in series with each other.

Energy storing apparatus

Growing community of inventors

Daejeon, South Korea

Taewoo Kim