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:
Jun. 30, 2020
Filed:
Dec. 21, 2017
Robert Bosch Battery Systems, Llc, Orion, MI (US);
Robert Bosch Gmbh, Stuttgart, DE;
Blake Joseph Riley, Chesterfield, MI (US);
Carlton Brown, Royal Oak, MI (US);
Robert Bosch Battery Systems, LLC, Orion, MI (US);
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A method for current sensor fault detection in a battery system comprises receiving a sequence of battery voltage samples from a voltage sensor configured to measure a battery voltage of a battery and a sequence of battery current samples from a current sensor configured to measure a battery current of the battery; determining a change in the battery voltage samples over a predetermined number of samples and a change in the battery current samples over the predetermined number of samples; checking whether a ratio of the change in the battery voltage samples and the change in the battery current samples is within an expected range for one of (i) a resistance of the battery and (ii) a conductance of the battery; and detecting a fault in the current sensor based on whether the ratio is within the expected range.