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:
May. 26, 2026
Filed:
Feb. 14, 2024
Samsung Sdi Co., Ltd., Yongin-si, KR;
Duck-Hyun Kim, Yongin-si, KR;
Giho Seo, Yongin-si, KR;
Kwangmin Yoo, Yongin-si, KR;
Kyosung Koo, Yongin-si, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
One or more embodiments provide a switch diagnosis device including: a switch in a current path at a high voltage side; a voltage-sensing circuit configured to generate a voltage signal by sensing a voltage across the switch at the high voltage side; a current-sensing circuit configured to generate a current signal by detecting a current flowing through the current path; a controller configured to: receive the voltage signal and the current signal, calculate contact resistance of the switch based on the received voltage signal and the received current signal, and diagnose a deterioration state of the switch based on the calculated contact resistance; and a first isolated communication circuit configured to transfer the voltage signal outputted from the voltage-sensing circuit to the controller at a low voltage side that is galvanically isolated from the high voltage side.