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Title: Circuits and methods for determination and control of signal transition rates in electrochemical cells

A charge/discharge input is for respectively supplying charge to, or drawing charge from, an electrochemical cell. A transition modifying circuit is coupled between the charge/discharge input and a terminal of the electrochemical cell and includes at least one of an inductive constituent, a capacitive constituent and a resistive constituent selected to generate an adjusted transition rate on the terminal sufficient to reduce degradation of a charge capacity characteristic of the electrochemical cell. A method determines characteristics of the transition modifying circuit. A degradation characteristic of the electrochemical cell is analyzed relative to a transition rate of the charge/discharge input applied to the electrochemical cell. An adjusted transition rate is determined for a signal to be applied to the electrochemical cell that will reduce the degradation characteristic. At least one of an inductance, a capacitance, and a resistance is selected for the transition modifying circuit to achieve the adjusted transition rate.
Authors:
Publication Date:
OSTI Identifier:
1246909
Report Number(s):
9,312,577
13/673,065
DOE Contract Number:
AC07-05ID14517
Resource Type:
Patent
Resource Relation:
Patent File Date: 2012 Nov 09
Research Org:
Idaho National Laboratory (INL), Idaho Falls, ID (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; 25 ENERGY STORAGE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS