Lg Chem, Ltd

Lg Energy Solution, Ltd.

Osong Medical Innovation Foundation, Korea University Research and Business Foundation

Aekyung Petrochemical Co., Ltd.

Jong Hwa Lee

Kwang Soo Jeon

Jin Sam Koo

Dong Hyun Lee

Kyoung Min Kwon

Jun Hyuk Pack

Kyoung Heon Kim

Do Hyoung Kim

Jung Pil Lee

Eun Bee Kim

Hye Ri Jung

Dae Sik Chung

Su Han Park

Sung Ju Cho

Yeong Im Yu

Wook Park

Sung Duck Seo

Hyoen Gu Jeon

Thirumalaisamy Babu

Yang Hyun Huh

Sung Ho Oh

Su Han Kim

Chang Seok Hyun

Jung Moo Lee

Ho Chang Lee

Jeong Gon Kim

Hyun Il Park

The present technology relates to a battery cell jig including film-type pressure sensors, and a method of measuring a swelling of a battery cell using the same. According to the present invention, by using film-type pressure sensors, the volume of the measuring apparatus can be reduced, and abnormal degeneration of the battery cell by the pressure difference for each location of the battery cell can be prevented.

Battery cell jig including film-type pressure sensor, and method for measuring swelling of battery cell

The present invention relates to acell line, which comprises a mutant gene, having improved tolerance for cytotoxicity of stromal cells, and a method for producing dicarboxylic acid using thecell line. Thecell line for producing dicarboxylic acid developed according to the present invention has improved tolerance for existing stromal toxicity as well as significantly improved efficiency for producing dicarboxylic acid compared to existing cell lines, thus can be used in biological production of dicarboxylic acid and is expected to have high industrial utility.

strain having improved tolerance to the cytotoxicity of substrates, and method for producing dicarboxylic acid using same

A method for detecting failure of a battery cell due to an unknown discharge current, including connecting a detector in series between the battery cell and a power supply for supplying a charging power, determining whether the charging of the battery cell progresses by the charging power in excess of a predetermined battery cell specific charging reference time, measuring a current value of the battery cell in real time if the charging of the battery cell progresses in excess of the battery cell specific charging reference time, determining whether the current value of the battery cell measured in real time exceeds a predetermined battery cell specific failure determination reference current range value, and determining a state of the battery cell as a failure state if the current value of the battery cell exceeds the predetermined battery cell specific failure determination reference current range value.

Apparatus and method for detecting battery cell failure due to unknown discharge current

An apparatus for inspecting the welding for a secondary battery includes: a measuring unit measuring a power value (P) supplied to the welding apparatus and a taken time (S) when the electrode tab and the electrode lead are welded to each other to obtain measured welding data (Data); an instrument unit obtaining a waveform representing a relationship between the power value (P) and the taken time (S) by using the measured welding data obtained by the measuring unit to display the waveform on a graph; and an inspection unit comparing the measured welding waveform displayed on the graph with a normal welding waveform to inspect whether the defective welding occur in real-time.

Apparatus and method for inspecting welding of secondary battery

The present invention relates to a method of preparing a lithium secondary battery which may improve productivity and performance of the lithium secondary battery by visually measuring an actual electrolyte solution impregnation time for an electrode active material, setting an estimated impregnation time of the electrolyte solution for a battery based on a measured result, and reflecting the estimated impregnation time in a production process.

Method of preparing lithium secondary battery

The present invention relates to a manufacturing method of polyaspartic acid. More particularly, the present invention relates to a manufacturing method of polyaspartic acid comprising steps of carrying out condensation polymerization of maleic anhydride and ammonia in the presence of a polar solvent without active hydrogen to give polysuccinimide and hydrolyzing the resulting polysuccinimide to obtain polyaspartic acid. Specifically, the present invention is characterized in that the quality of the synthetic product, polysuccinimide and polyaspartic acid, is improved by minimizing the decomposition and the degradation of the maleic acid during the process of the polymerization resulted from the introduction of substituent to maleic acid.

Manufacturing method of polyaspartic acid using maleic anhydride

Growing community of inventors

Daejeon, South Korea

Jong Hwa Lee