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:
Dec. 27, 1977
Filed:
Feb. 01, 1974
Pierre Godard, Livry-Gargan, FR;
Robert Henri Lapuyade, Andilly, FR;
Abstract
A system and method for effecting rapid safe charging of sealed storage cells embodying a charger to supplying a rapid high rate charging current to the cells or battery of cells with interruption but once during charging, at an optimum time to prevent cell or battery damage, the timing of this interruption being effected by change in magnitude of a continuous control signal by means incorporated in the cell or battery. This magnitude changes when voltage across the cell terminals increases above a reference voltage that varies with change in battery or cell temperature, the change in said magnitude of the control signal serving to effect interruption of rapid charging. Subsequent to this interruption charging at a slower rate proceeds to complete the charge of the sealed cell or battery of such cells.