Title: Method for monitoring/managing electrochemical energy device by detecting intercalation stage changes

Abstract

A method for determining an operating state (e.g., state-of-charge or state-of-health) and/or generating management (charge/discharge) control information in a system including an electrochemical energy device (EED, e.g., a rechargeable Li-ion battery, supercapacitor or fuel cell) that uses optical sensors to detect the intercalation stage change events occurring in the EED. The externally or internally mounted optical sensors measure operating parameter (e.g., strain and/or temperature) changes of the EED during charge/recharge cycling, and transmit measured parameter data using light signals sent over optical fibers to a detector/converter. A processor then analyzes the measured parameter data, e.g., using a model-based estimation process, to detect intercalation stage changes (i.e., crystalline structure changes caused by migration of guest species, such as Li-ions, between the EED's anode and cathode), and generates the operating state and charge/discharge control information based the analysis.

Inventors:

Saha, Bhaskar; Raghavan, Ajay; Kiesel, Peter; Sommer, Lars Wilko; Lochbaum, Alexander; Staudt, Tobias; Sahu, Saroj Kumar; Ganguli, Anurag

Issue Date:

2017-02-28

Research Org.:

Palo Alto Research Center Inc., Palo Alto, CA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1531977

Patent Number(s):

9583796

Application Number:

14/242,850

Assignee:

Palo Alto Research Center Incorporated (Palo Alto, CA)

Patent Classifications (CPCs):

G - PHYSICS G01 - MEASURING G01D - MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE

G - PHYSICS G01 - MEASURING G01L - MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE

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G - PHYSICS G01 - MEASURING G01D - MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE

G01D5/353 - influencing the transmission properties of an optical fibre
G01D5/35316 - {using a Bragg gratings}

G - PHYSICS G01 - MEASURING G01L - MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE

G01L1/246 - {using integrated gratings, e.g. Bragg gratings}

G - PHYSICS G01 - MEASURING G01M - TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES

G01M11/085 - {the optical fiber being on or near the surface of the DUT}

G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES

G01R31/392 - Determining battery ageing or deterioration, e.g. state of health

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

H01M10/425 - {Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
H01M10/4257 - {Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries}
H01M10/44 - Methods for charging or discharging
H01M10/48 - Accumulators combined with arrangements for measuring, testing or indicating condition, e.g. level or density of the electrolyte
H01M10/486 - {for measuring temperature}
H01M2010/4271 - {Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing}
H01M2010/4278 - {Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y02E60/10 - Energy storage

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DOE Contract Number:  

AR0000274

Resource Type:

Patent

Resource Relation:

Patent File Date: 2014-04-01

Country of Publication:

United States

Language:

English

Subject:

25 ENERGY STORAGE