Lg Chem, Ltd

Lg Energy Solution, Ltd.

Jong-Mo Jung

Soon-Ho Ahn

Jung-Soo Kang

Hyo-Shik Kil

Sung-Hyup Lee

Min-Jeong Lee

Sung-Won Hong

Jong-Hoa Ok

Jeong-Min Kim

Seung-Tae Hong

Jae-Hyun Lee

The present invention provides a method for measuring moisture content in a separator of secondary battery by using a gas chromatograph equipped with a headspace sampler. The separator of secondary battery may be a safety reinforced separator (SRS) in which inorganic substance particles and a binder polymer are coated on a polyolefin substrate.

Method for measuring content of moisture in secondary battery separator

The present invention relates to a gas sample injection apparatus for gas chromatography analysis comprising: a gas collecting tube for collecting the gas inside a cell and regulating it with an open/close valve to discharge a portion of the collected gas as a gas sample; a gas sampling loop for collecting the gas sample injected into a gas chromatograph; a first switching valve for regulating an injection of the gas sample filled in the gas sampling loop into the column of the chromatography with a carrier gas; a second switching valve connected to the gas collection tube and for regulating a diffusion of the gas sample into the gas sampling loop; and a vacuum pump for vacuum-depressurizing the gas sampling loop, and an injection method using the same.

Gas sample injection device for gas chromatographic analysis, and method thereof

In accordance with one aspect of the present invention, provided is an apparatus for managing a battery system having a plurality of battery cells connected in series, the apparatus comprising a performance measurement section for measuring a performance of each of the battery cells; a cell switching section for turning on or off a connection of each battery cell to other battery cells; and a controlling section for comparing the performance of each battery cell measured by the performance measurement section with a reference performance and, in the presence of the battery cell(s) having measured performance lower than the reference performance, controlling the cell switching section to interrupt the connection of the relevant battery cell(s) to other battery cells.

Apparatus and method for managing battery system

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Daejeon, South Korea

Jong-Mo Jung