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:
Oct. 07, 2008
Filed:
Oct. 29, 2004
Takeshi Nozaki, Toyota, JP;
Takeshi Nozaki, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
An ECU performs a program. In the program, in the case where a converter is performing an operation for increasing a voltage (i.e., YES in step S), when a difference between an estimated battery voltage VBE and a battery voltage VB has continued to be large (i.e., YES in step S), the ECU tentatively determines that a battery voltage sensor is abnormal (S), and stops voltage increasing control for the converter (S). If an absolute value of a difference between a battery voltage and an output side voltage is large (i.e., YES in step S), a difference A which is an absolute value between an estimated battery voltage and a battery voltage, and a difference B which is an absolute value between the estimated battery voltage and an output side voltage are calculated (S). If a value obtained by subtracting the difference B from the difference A has continued to be large (i.e., YES in step S), it is determined that the battery voltage sensor is abnormal (S). If a voltage obtained by subtracting the difference A from the difference B has continued to be large (i.e., YE in step S), it is determined that the output side voltage sensor is abnormal (S).