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:
Sep. 16, 2025
Filed:
Mar. 01, 2023
Imasen Electric Industrial Co., Ltd., Inuyama, JP;
Koichi Yamanoue, Inuyama, JP;
Daisuke Makio, Inuyama, JP;
Imasen Electric Industrial Co., Ltd., Inuyama, JP;
Abstract
A vehicle power supply device comprises: a first power storage element group having multiple power storage elements connected in series; a second power storage element group connected in series to the positive pole side of the first power storage element group forming a high-voltage DC power supply by being combined with the first power storage element group; an active balancer; a first switching means and second switching means disposed between the first power storage element group and a low-voltage load; a control means; an interrupting means for interrupting power from the high voltage DC power supply; and a power leakage detection means. The control means determines a signal transmitted from the power leakage detection means during a dead time period in which the first and second switching means are OFF, and interrupts power supplied to the load for a prescribed period if the leakage current has reached a prescribed level.