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:
May. 12, 2020
Filed:
May. 22, 2018
Magneti Marelli S.p.a., Corbetta, IT;
MAGNETI MARELLI S.p.A., Corbetta, IT;
Abstract
A method for estimating an operating current I dispensed by a battery pack or cell including the steps of acquiring characterization data of the battery pack or cell, related to measured time trends of a voltage Vm and of a characterization current Im of the battery pack or cell, associated with a respective characterization temperature value T; and then processing the characterization data to determine a plurality of parameters P of a model of the battery pack or cell, as a function of temperature and state of charge SOC. Measuring an operating voltage V of the battery pack or cell and an operating temperature T and for estimating the operating current I of the battery pack or cell. A plurality of time observation windows Wis identified and characterization voltage Vmvalues are detected. Then, at each observation window W, the following actions are performed: calculating a value of the state of charge SOCof the battery pack or cell; calculating an estimated voltage V, by means of the model of the battery pack or cell, as a function of respective nominal values of the parameters P; determining a respective error function Edependent on the difference between the estimated voltage Vand the characterization voltage Vmof the time observation window W; calculating an actual value Pfor each parameter P, by minimizing the aforesaid error function E.