The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10324119 B1

Date of Patent:

Jun. 18, 2019

Filed:

Mar. 10, 2016

Insulation resistance measuring device and method

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventor:

Ho-Been Choi, Daejeon, KR;

Assignee:

LG CHEM, LTD., Seoul, KR;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Jeff W Natalini

Int. Cl.

CPC ...

G01R 27/08 (2006.01); G01R 31/36 (2019.01); G01R 19/15 (2006.01); G01R 31/12 (2006.01); G01R 27/02 (2006.01); G01R 27/18 (2006.01); G01R 15/09 (2006.01); G01R 31/00 (2006.01); G01R 31/02 (2006.01); G01R 31/385 (2019.01);

U.S. Cl.

CPC ...

G01R 27/08 (2013.01); G01R 19/15 (2013.01); G01R 27/025 (2013.01); G01R 27/18 (2013.01); G01R 31/12 (2013.01); G01R 31/36 (2013.01); G01R 15/09 (2013.01); G01R 31/006 (2013.01); G01R 31/025 (2013.01); G01R 31/385 (2019.01);

Abstract

The present disclosure relates to an insulation resistance measuring device and method, including a parameter resistance connected to a negative electrode terminal of a battery; a shunt resistance connectable to the parameter resistance; a current detection circuit including an operational amplifier configured to detect and output voltage between both ends of the shunt resistance; and a control unit configured to determine the insulation resistance of the battery using a switch control terminal configured to control a switch connected between the parameter resistance and the shunt resistance to an ON or OFF state, a detection signal output terminal configured to selectively apply a first high voltage signal and a first low voltage signal to the shunt resistance, a control signal output terminal configured to apply a control voltage signal to the operational amplifier to adjust an output voltage of the operational amplifier within a predetermined range, an ADC connected to an output terminal of the operational amplifier, and a predefined insulation resistance formula that includes, as a parameter, a first voltage change amount with respect to the output voltage of the operational amplifier being measured through the ADC when the first high voltage signal and the first low voltage signal are applied to the shunt resistance.

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