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:
Jul. 01, 2014
Filed:
Mar. 21, 2012
Samuel Hodson Nork, Andover, MA (US);
Brian J. Shaffer, Lynnfield, MA (US);
Samuel Hodson Nork, Andover, MA (US);
Brian J. Shaffer, Lynnfield, MA (US);
Linear Technology Corporation, Milpitas, CA (US);
Abstract
A battery balancing method and system which includes a plurality of cells connected in series, a balancer for each cell, a monitor configured to determine a state of charge (SOC) of each cell, and a microprocessor. The microprocessor iteratively calculates a SOC error for each cell, based on a theoretical balancing of the Min Q cell and the Max Q cell, until the SOC error is less than or equal to a first threshold; and iteratively re-calculates SOC error based on a net charge or discharge time for each balancer until the SOC error is less than or equal to a second threshold; and when the SOC error is less than or equal to the second threshold, instructs each balancer to physically balance each respective cell based on the respective calculated net charge or discharge time when the second threshold is met.