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:
Jan. 21, 1997
Filed:
Oct. 31, 1994
Wolf Boll, Weinstadt, DE;
Mercedes-Benz AG, , DE;
Abstract
The invention relates to a method of monitoring the state of charge of the battery of a hybrid vehicle, in which the charge level of the battery is determined by balancing the charge quantities extracted and supplied, and is indicated to the driver. Because of the inaccuracy of the charge balancing, resetting of the balancing from a reliable limit value must be carried out from time to time. In order to assist the operator of the hybrid vehicle in monitoring the battery charge level, according to the invention an error variable is calculated which indicates a discrepancy between the indicated charge level and the actual charge level, and the vehicle operator is provided with an indication if this variable exceeds a maximum value. In a representative embodiment, the error variable is set to be proportional to the current through the battery.