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:
Feb. 15, 2000
Filed:
Apr. 29, 1998
Sagem S.A., , FR;
Abstract
The present invention relates to a process for charging a battery from an alternating current voltage which provides voltage to the battery in each direction. The charging current is regulated alternatively in a boost and buck mode as a function of an error (AI) between the instant value of the current and an instant value of a supply current following a pre-determined pattern. The activation of the modes of operation is controlled according to the sign of the error of the current (AI). The present invention also relates to a battery charger for implementing the above charging process. The battery charger has two sub-assemblies for current regulation operating respectively in boost and buck modes, a subtractor for determining the error of current, and a common loop for feeding the sub-assemblies and controlling amplifiers for the activation, depending on the sign of the error.