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. 29, 2020
Filed:
Mar. 06, 2019
Yazaki Corporation, Tokyo, JP;
Yoshihiro Kawamura, Makinohara, JP;
YAZAKI CORPORATION, Tokyo, JP;
Abstract
A ground fault detection apparatus includes a control unit, a detection capacitor, a positive-electrode-side first resistor connected to positive-electrode side of a high-voltage battery, a negative-electrode-side first resistor connected to negative-electrode side of the high-voltage battery, a positive-electrode-side second resistor where one end is grounded and voltage of another end is measured by the control unit, a negative-electrode-side second resistor having one end grounded, a positive-electrode-side C contact switch that switches connection destination of one end of the detection capacitor between a path including the positive-electrode-side first resistor and a path including the positive-electrode-side second resistor based on instruction from the control unit, a negative-electrode-side C contact switch that switches connection destination of another end of the detection capacitor between a path including the negative-electrode-side first resistor and a path including the negative-electrode-side second resistor based on instruction from the control unit, and a path switching C contact switch.
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