Title (en)
METHOD AND APPARATUS FOR JUDGING DETERIORATION OF BATTERY
Title (de)
VERFAHREN UND VORRICHTUNG ZUR BEURTEILUNG DER VERSCHLECHTERUNG EINER BATTERIE
Title (fr)
PROCEDE ET APPAREIL POUR EVALUER L'ETAT DE DETERIORATION D'UNE BATTERIE
Publication
EP 1636602 A2 20060322 (EN)
Application
EP 04746158 A 20040615
Priority
• JP 2004008688 W 20040615
• JP 2003178319 A 20030623
Abstract (en)
[origin: WO2004113939A2] A method and apparatus for judging deterioration of a battery are provided, thereby a correct judgement for the
deterioration of the battery can be timely carried out so as to replace the battery with another if it is necessary. The apparatus for judging
deterioration of a battery that supplies electric power to a load includes: storing means 23c for storing a minimum guaranteed voltage predetermined
as a minimum value of a terminal voltage of the battery 13 when a given current flows into the load; voltage drop computing means 23a for
computing a voltage drop due to an ohmic resistance and polarization resistance of the battery occurred in response to a discharge of the battery
when a given current flows from the battery into the load; first comparing means 23a for comparing the minimum guaranteed voltage stored in the
storing means 23c with a first difference value, which is obtained by subtracting the voltage drop computed by the voltage drop computing means
23a from an open circuit voltage that corresponds to a state of charge upon a start of the discharge of the battery; and first deterioration judging
means 23a for judging that the battery is deteriorated if the first difference value becomes equal to or smaller than the minimum guaranteed voltage
and the state of charge upon the start of the discharge exceeds a first specific value as a result of the comparison by the first comparing means 23a.
Inventor
• ARAI YOUICHI (JP)
• SAIGO TSUTOMU (JP)
• SATAKE SHUJI (JP)
• TAKEMOTO HISASHI (JP)
• ITO KEN (JP)
• MIYAZAKI YOSHIYA (JP)
Applicant
YAZAKI CORP (JP)
IPC 1-7 (main, further and additional classification)
G01R 31/36
IPC 8 full level (invention and additional information)
G01R 31/36 (2006.01); H01M 10/48 (2006.01)
CPC (invention and additional information)
G01R 31/3679 (2013.01); G01R 31/3631 (2013.01)
Citation (search report)
•
•
•
•
•
[X] GB 2377833 A
[X] US 6317697 B1 20011113 - YOSHIKAWA TETSUO [JP], et al
[X] JP 2003132959 A
[X] US 5703469 A
[X] EP 0714033 A2
• [X] PATENT ABSTRACTS OF JAPAN vol. 2000, no. 21, 3 August 2001 (2001-08-03) & JP 2001 119862 A (MATSUSHITA
ELECTRIC IND CO LTD), 27 April 2001 (2001-04-27)
• [X] PATENT ABSTRACTS OF JAPAN vol. 1995, no. 10, 30 November 1995 (1995-11-30) & JP 07 183050 A (SHIN KOBE
ELECTRIC MACH CO LTD), 21 July 1995 (1995-07-21)
• [X] PATENT ABSTRACTS OF JAPAN vol. 2003, no. 09, 3 September 2003 (2003-09-03) & JP 2003 132959 A (MATSUSHITA
ELECTRIC IND CO LTD), 9 May 2003 (2003-05-09)
• See also references of WO 2004113939A2
Designated contracting state (EPC)
DE FR
EPO simple patent family
WO 2004113939 A2 20041229; WO 2004113939 A3 20050303; AU 2004250021 A1 20041229; CN 1809758 A 20060726; EP 1636602 A2
20060322; JP 2005019019 A 20050120; KR 20060022712 A 20060310; US 2007096743 A1 20070503
INPADOC legal status
2009-09-23 [18W] WITHDRAWN
- Effective date : 20090818
2006-09-27 [DAX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT (TO ANY COUNTRY) DELETED
2006-09-27 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):
- Designated State(s) : DE FR
2006-03-22 [17P] REQUEST FOR EXAMINATION FILED
- Effective date : 20051220
2006-03-22 [AK] DESIGNATED CONTRACTING STATES:
- Kind Code of Ref Document : A2
- Designated State(s) : DE FR