公开(公告)号：US20210190878A1

公开(公告)日：2021-06-24

申请号：US16769500

申请日：2019-09-11

Applicant: LG CHEM, LTD.

Inventor： Eun-Ju LEE ,  Yoon-Jung BAE ,  Yong-Jun KIM

IPC: G01R31/392 ,  G01R31/3835 ,  G01R31/36

Abstract: The present disclosure relates to a battery management apparatus and method, which sets a degraded SOC region based on a SOC-based voltage difference between a charging voltage and a discharging voltage according to a SOC of a battery and estimates a degree of degradation of the battery based on the voltage difference in the set degraded SOC region.

公开(公告)号：US20150357619A1

公开(公告)日：2015-12-10

申请号：US14826796

申请日：2015-08-14

Applicant: LG CHEM, LTD.

Inventor： Yoon-Jung BAE ,  In-Chul KIM ,  Seung-Taek HONG ,  Jong-Hwan KIM ,  Han-Ho LEE

IPC: H01M2/16

CPC classification number: H01M2/1686 ,  H01M2/1646 ,  H01M2/1653 ,  H01M2/166 ,  H01M10/052 ,  H01M10/0525 ,  H01M2200/30 ,  H01M2220/20

Abstract: A separator includes a monolayer-type polyolefin-based micro-porous film having a porosity of 40 to 60%, an average pore diameter of 60 nm or less, and an air permeability of 350 s/100 mL or less; and a porous coating layer formed on at least one surface of the micro-porous film and made of a mixture of a plurality of inorganic particles and a binder polymer. An electrochemical device having the above separator has excellent thermal stability and allows a high power while minimizing the occurrence of leak current.

Abstract translation: 隔膜包括孔隙率为40〜60％，平均孔径为60nm以下，透气度为350s / 100mL以下的单层型聚烯烃类微孔膜; 以及形成在所述微孔膜的至少一个表面上并由多个无机颗粒和粘合剂聚合物的混合物制成的多孔涂层。 具有上述分离器的电化学装置具有优异的热稳定性并且允许高功率同时最小化泄漏电流的发生。

公开(公告)号：US20220381841A1

公开(公告)日：2022-12-01

申请号：US16606359

申请日：2018-10-31

Applicant: LG CHEM, LTD.

Inventor： Yoon-Jung BAE ,  Dae-Soo KIM ,  Ji-Yeon KIM ,  Dong-Kyu KIM ,  Jae-Hyun LEE ,  Jin-Hyung LIM ,  Young-Geun CHOI

IPC: G01R31/3835 ,  G01R31/36 ,  G01R31/396 ,  G01R31/388

Abstract: The present disclosure relates to an apparatus for estimating a battery free capacity, and more particularly, an apparatus for estimating a free capacity of a half cell of a battery. According to the present disclosure, it is possible to accurately estimate a free capacity of a half cell without inserting a reference electrode by revising an entire SOC region of a half cell by using an inflection point detected based on SOC-voltage data of a full cell and a half cell of the battery, respectively, and then estimating SOC-voltage data based on a SOC difference between the entire SOC regions before and after the revision.