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. 04, 2014
Filed:
Dec. 31, 2009
Vineet Haresh Mehta, Mountain View, CA (US);
Jeffrey Brian Straubel, Menlo Park, CA (US);
Vineet Haresh Mehta, Mountain View, CA (US);
Jeffrey Brian Straubel, Menlo Park, CA (US);
Tesla Motors, Inc., Palo Alto, CA (US);
Abstract
A battery cell charging system, including a charger and a controller, for rapidly charging a lithium ion battery cell, the battery cell charging system having a circuit for charging the battery cell using an adjustable voltage charging-profile to apply a charging voltage and a charging current to the battery cell wherein the adjustable voltage charging-profile includes: a first charging stage with a constant first stage charging current and an increasing battery cell voltage with the first stage charging current provided until the first stage charging voltage is about equal to a first stage complete voltage less than a maximum battery cell voltage; an intermediate ramped charging stage, the intermediate ramped charging stage including both an increasing ramped voltage and a decreasing ramped iBat current for the battery cell for the voltage charging range of the first stage complete voltage to about the maximum battery cell voltage; and a final charging stage with a constant final stage charging voltage about equal to the maximum battery cell voltage and a decreasing final stage charging current with the final stage charging voltage provided until the final stage charging current reaches a desired charge complete level.