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. 25, 2018
Filed:
Sep. 29, 2015
Amazon Technologies, Inc., Seattle, WA (US);
Wieslaw Brys, Bedford, MA (US);
Eric Bernard Jones, Somerville, MA (US);
Richard Alan Goloski, Wakefield, MA (US);
Kevin John Trenholme, Stow, MA (US);
Amazon Technologies, Inc., Seattle, WA (US);
Abstract
Approaches and related devices monitor the condition of a battery via voltage measurement during routine recharging instances. An approach includes supplying a charging current to the battery during each of a plurality of routine charging instances. The charging current is increased by a measured or predetermined amount during a current pulse portion of each of the routine charging instances. A resulting change in a battery voltage of the battery during the current pulse portion of each of the routine charging instances is measured. An impedance-indicative value of the battery is determined for each of the routine charging instances based on the change in the battery voltage during the current pulse portion. The impedance-indicative value is stored in a memory device for each of the routine charging instances. A condition of the battery is estimated based on one or more changes in the impedance-indicative values.