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1. WO2011001727 - END-OF-DISCHARGE VOLTAGE CORRECTION DEVICE AND END-OF-DISCHARGE VOLTAGE CORRECTION METHOD

Publication Number WO/2011/001727
Publication Date 06.01.2011
International Application No. PCT/JP2010/055688
International Filing Date 30.03.2010
IPC
H01M 10/48 2006.01
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
G01R 31/36 2006.01
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
H01M 2/10 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2Constructional details, or processes of manufacture, of the non-active parts
10Mountings; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
H01M 10/39 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
36Accumulators not provided for in groups H01M10/05-H01M10/3492
39working at high temperature
H01M 10/44 2006.01
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
44Methods for charging or discharging
H02J 7/00 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
7Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
CPC
G01R 31/367
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]
367Software therefor, e.g. for battery testing using modelling or look-up tables
G01R 31/3835
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
3835involving only voltage measurements
G01R 31/396
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]
396Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
H01M 10/3909
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
36Accumulators not provided for in groups H01M10/05-H01M10/34
39working at high temperature
3909Sodium-sulfur cells
H01M 10/441
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
44Methods for charging or discharging
441for several batteries or cells simultaneously or sequentially
H01M 10/448
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
44Methods for charging or discharging
448End of discharge regulating measures
Applicants
  • 日本碍子株式会社 NGK INSULATORS, LTD. [JP]/[JP] (AllExceptUS)
  • 古田 一人 FURUTA Kazuhito [JP]/[JP] (UsOnly)
  • 平井 直樹 HIRAI Naoki [JP]/[JP] (UsOnly)
  • 生田 慶太 IKUTA Keita [JP]/[JP] (UsOnly)
Inventors
  • 古田 一人 FURUTA Kazuhito
  • 平井 直樹 HIRAI Naoki
  • 生田 慶太 IKUTA Keita
Agents
  • 吉竹 英俊 YOSHITAKE Hidetoshi
Priority Data
2009-15354529.06.2009JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) END-OF-DISCHARGE VOLTAGE CORRECTION DEVICE AND END-OF-DISCHARGE VOLTAGE CORRECTION METHOD
(FR) DISPOSITIF DE CORRECTION DE TENSION D'EXTRÉMITÉ DE DÉCHARGE ET PROCÉDÉ DE CORRECTION DE TENSION D'EXTRÉMITÉ DE DÉCHARGE
(JA) 放電末電圧補正装置及び放電末電圧補正方法
Abstract
(EN)
Provided are an end-of-discharge voltage correction device and an end-of-discharge voltage correction method whereby an end-of-discharge voltage is appropriately corrected. An end-of-discharge voltage correction unit calculates an end-of-discharge voltage VL by subtracting I × RO and ITD × RP from an end-of-discharge open voltage VLOC, where I × RO is the product of the discharging voltage I and ohmic resistance RO of a block, and ITD × RP is the product of the time-delayed discharging voltage ITD and polarization resistance RP of said block. The ohmic resistance RO increases as an equivalent cycle count CY increases, and increases as a healthy/parallel number NPH decreases. The amount ΔCY by which the equivalent cycle count CY increases each charge/discharge cycle increases as the discharge depth DD increases. The healthy/parallel number NPH is derived by multiplying the healthy/parallel number NPHR of a reference block by the ratio of CPR to CPS, where CPR is the capacity of the reference block and CPS is the capacity of the target block.
(FR)
L'invention concerne un dispositif de correction de tension d'extrémité de décharge et un procédé de correction de tension d'extrémité de décharge permettant de corriger correctement une tension d'extrémité de décharge. Une unité de correction de tension d'extrémité de décharge calcule une tension d'extrémité de décharge VL en soustrayant I × RO et ITD × RP d'une tension ouverte d'extrémité de décharge VLOC, I × RO étant le produit de la tension de décharge I et de la résistance ohmique RO d'un bloc, et ITD × RP étant le produit de la tension de décharge temporisée ITD et de la résistance de polarisation RP dudit bloc. La résistance ohmique RO augmente quand un comptage de cycle équivalent CY augmente, et augmente quand un nombre sain/parallèle NPH diminue. La quantité ΔCY selon laquelle le comptage de cycle équivalent CY augmente chaque cycle de charge/décharge augmente quand la profondeur de décharge DD augmente. Le nombre sain/parallèle NPH est obtenu en multipliant le nombre sain/parallèle NPHR d'un bloc de référence par le rapport de CPR sur CPS, CPR étant la capacité du bloc de référence et CPS étant la capacité du bloc cible.
(JA)
 放電末電圧が適切に補正される放電末電圧補正装置及び放電末電圧補正方法を提供する。放電末電圧補正部は、ブロックの放電電流Iとブロックのオーミック抵抗ROとの積I×RO及びブロックの放電電流Iに対して時間遅れ処理を施した放電電流ITDとブロックの分極抵抗RPとの積ITD×RPを放電末開放電圧VLOCから引き放電末電圧VLとする。オーミック抵抗ROは、等価サイクル数CYが増加するほど増加し、健全並列数NPHが減少するほど増加する。充放電サイクルの各々における等価サイクル数CYの増分ΔCYは、放電深度DDが深くなるほど大きくなる。健全並列数NPHは、対象ブロックの容量CPSに対する基準ブロックの容量CPRの比を基準ブロックの健全並列数NPHRに掛けることにより導出される。
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