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. 24, 2024
Filed:
Nov. 19, 2020
Sanyo Electric Co., Ltd., Osaka, JP;
Yousuke Nakagawa, Hyogo, JP;
SANYO Electric Co., Ltd., Osaka, JP;
Abstract
In leakage detecting device () that detects an electric leakage from a high-voltage unit in which power storage unit () and a load are connected by a power supply line in a state of being insulated from an earth, Y capacitor (CY) is connected between the earth and a current path between power storage unit () and the load. Drive unit () of leakage detecting device () outputs a rectangular wave voltage to the current path between power storage unit () and the load via driving coupling capacitor (Cd) to charge or discharge Y capacitor (CY). Leakage detector () determines presence or absence of the electric leakage between the current path and the earth according to a time transition in which the voltage at the measurement point of the current path changed according to charging or discharging of Y capacitor (CY) converges to an original voltage.