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1. EP2452201 - SECONDARY BATTERY TEMPERATURE-ESTIMATING APPARATUS AND METHOD

Office European Patent Office
Application Number 10740267
Application Date 07.07.2010
Publication Number 2452201
Publication Date 16.05.2012
Publication Kind B1
IPC
G01R 31/36
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge
G01K 7/42
GPHYSICS
01MEASURING; TESTING
KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
7Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat
42Circuits for reducing thermal inertia; Circuits for predicting the stationary value of temperature
G01K 13/10
GPHYSICS
01MEASURING; TESTING
KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
13Adaptations of thermometers for specific purposes
10for measuring temperature within piled or stacked materials
H01M 10/48
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
48Accumulators combined with arrangements for measuring, testing or indicating condition, e.g. level or density of the electrolyte
CPC
G01K 7/42
GPHYSICS
01MEASURING; TESTING
KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
7Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat
42Circuits for reducing thermal inertia; Circuits for predicting the stationary value of temperature
G01K 13/10
GPHYSICS
01MEASURING; TESTING
KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
13Adaptations of thermometers for specific purposes
10for measuring temperature within piled or stacked materials
G01R 31/3842
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
382Arrangements for monitoring battery or accumulator variables, e.g. SoC
3842combining voltage and current measurements
G01R 31/389
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
389Measuring internal impedance, internal conductance or related variables
H01M 10/486
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
48Accumulators combined with arrangements for measuring, testing or indicating condition, e.g. level or density of the electrolyte
486for measuring temperature
Y02E 60/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
60Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
10Energy storage using batteries
Applicants TOYOTA MOTOR CO LTD
Inventors NISHI YUJI
TAKAHASHI HIDENORI
TAZAWA MASATOSHI
MATSUSAKA MASANOBU
KAITA KEIJI
Designated States
Priority Data 2010001668 07.07.2010 IB
2009161923 08.07.2009 JP
Title
(DE) VORRICHTUNG UND VERFAHREN ZUR SCHÄTZUNG DER TEMPERATUR EINER SEKUNDÄRBATTERIE
(EN) SECONDARY BATTERY TEMPERATURE-ESTIMATING APPARATUS AND METHOD
(FR) APPAREIL POUR L'ESTIMATION DE LA TEMPÉRATURE D'UNE BATTERIE SECONDAIRE
Abstract
(EN)
An alternating current impedance-estimating section (106) estimates an alternating current impedance (Rh) of the secondary battery based on electric current (I) and voltage (V) of the secondary battery detected when a ripple generating section causes a ripple current to flow in the secondary battery. A temperature estimating section (108) estimates the temperature (T) of the secondary battery based on the alternating current impedance (Rh) estimated by the alternating current impedance-estimating section (106) with the use of the relation, obtained in advance, between the temperature (T) of the secondary battery and the alternating current impedance (Rh) of the secondary battery at a ripple frequency.

(FR)
Selon l'invention, une section d'estimation d'impédance à courant alternatif (106) estime une impédance à courant alternatif (Rh) d'une batterie secondaire en fonction d'un courant électrique (I) et d'une tension (V) de la batterie secondaire détectés lorsqu'une section de génération d'ondulation amène un courant ondulatoire à passer dans la batterie secondaire. Une section d'estimation de température (108) estime la température (T) de la batterie secondaire en fonction de l'impédance à courant alternatif (Rh) estimée par la section d'estimation d'impédance à courant alternatif (106) au moyen de la relation, obtenue à l'avance, entre la température (T) de la batterie secondaire et l'impédance à courant alternatif (Rh) de la batterie secondaire à une fréquence d'ondulation.