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:
Aug. 14, 2012
Filed:
Mar. 02, 2010
Satoru Mizuno, Okazaki, JP;
Satoru Mizuno, Okazaki, JP;
Denso Corporation, Kariya, JP;
Abstract
In an apparatus for detecting a state of a battery serving as a power source for cranking an internal combustion engine, a detecting unit and an internal resistance calculating unit are installed. The detecting unit detects a current and a voltage of the battery during a cranking period of the internal combustion engine, and outputs a parameter associated with at least one of the detected current and voltage of the battery. When a degree of change in the parameter within a specified period included in the cranking period is equal to or greater than a predetermined threshold, the internal resistance calculating unit calculates an internal resistance of the battery based on values of the current and voltage of the battery, the values of the current and the voltage being detected within the specified period.