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.:
Date of Patent:
Dec. 21, 2021
Filed:
Jan. 30, 2019
Lg Chem, Ltd., Seoul, KR;
Sun-Jong Lee, Daejeon, KR;
Abstract
An apparatus for diagnosing a relay driving circuit includes a sensing unit configured to measure a first measured voltage, a second measured voltage and a third measured voltage respectively applied to one end of the first switch, one end of the second switch and one end of the third switch; and a processor operably coupled to the sensing unit. The processor controls operation states of the first switch, the second switch and the third switch and diagnoses whether the relay driving circuit has a fault based on at least one of the first measured voltage, the second measured voltage and the third measured voltage measured by the sensing unit in a state where a diagnosing circuit is formed by controlling the operation states.