Title:
FULL CHARGE DETERMINATION DEVICE OF SECONDARY BATTERY FOR VEHICLE
Document Type and Number:
Japanese Patent JP3695175
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a full charge determination device of a battery for a vehicle for determining a full charge state independent of influence by hysteresis.
SOLUTION: A microcomputer 60 conducts plural samplings based on detecting values of an ammeter 40 and a voltmeter 50, and calculates the incline of a primary straight line showing the relation between voltage variation caused by polarization produced within a battery B and a polarization index showing the degree of the polarization based on plural sampling data obtained by both samplings. The microcomputer 60 determines a full charge state by comparing the calculated gradient with the gradient of a straight line showing the relation between the voltage variation in a previously set full charge state and the polarization index.
Inventors:
Kikuchi Katsuhide
Tsutomu Nakamura
Yoshinori Okazaki
Takanori Moriya
Tsutomu Nakamura
Yoshinori Okazaki
Takanori Moriya
Application Number:
JP29540998A
Publication Date:
September 14, 2005
Filing Date:
October 16, 1998
Export Citation:
Assignee:
Japan Auto Parts Research Institute, Inc.
TOYOTA JIDOSHA KABUSHIKI KAISHA
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
H02J7/10; G01R31/36; H01M10/48; (IPC1-7): H01M10/48; G01R31/36; H02J7/10
Domestic Patent References:
| JP2000077106A |
Attorney, Agent or Firm:
Yoji Ito
Takahiro Miura
Takahiro Miura