Title: Battery management based on internal optical sensing

Abstract

A battery management system includes one or more fiber optic sensors configured to be disposed within an electrochemical battery. Each fiber optic sensor is capable of receiving input light and providing output light that varies based on the input light and an amount of free or dissolved gas present within the battery. A detector detects the output light and generates an electrical detector signal in response to the output light. Battery management circuitry determines the state of the battery based at least in part on the detector signal.

Inventors:

Raghavan, Ajay; Kiesel, Peter; Lochbaum, Alexander; Saha, Bhaskar; Sommer, Lars Wilko; Staudt, Tobias

Issue Date:

2017-01-24

Research Org.:

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

Sponsoring Org.:

USDOE

OSTI Identifier:

1531970

Patent Number(s):

9553465

Application Number:

14/257,673

Assignee:

Palo Alto Research Center Incorporated (Palo Alto, CA)

Patent Classifications (CPCs):

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES

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G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

G01N2021/0112 - {Apparatus in one mechanical, optical or electronic block}
G01N2021/7709 - {Distributed reagent, e.g. over length of guide}
G01N2021/772 - {Tip coated light guide}
G01N2021/7783 - {Transmission, loss}
G01N2021/7786 - {Fluorescence}
G01N21/7703 - {using reagent-clad optical fibres or optical waveguides
G01N33/0036 - {Specially adapted to detect a particular component

G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES

G01R31/382 - Arrangements for monitoring battery or accumulator variables, e.g. SoC
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

H01M10/052 - Li-accumulators
H01M10/48 - Accumulators combined with arrangements for measuring, testing or indicating condition, e.g. level or density of the electrolyte

H - ELECTRICITY H02 - GENERATION H02J - CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER

H02J7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
H02J7/0031 - {using battery or load disconnect circuits
H02J7/0048 - {Detection of remaining charge capacity or state of charge [SOC]}
H02J7/005 - {Detection of state of health [SOH]}
H02J7/00719 - {in response to degree of gas development in the battery}

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: 2014-04-21

Country of Publication:

United States

Language:

English