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公开(公告)号：US10466302B2
公开(公告)日：2019-11-05
申请号：US14852329
申请日：2015-09-11
发明人： Noriyasu Iwane , Koichi Yokoyama , Naoya Takashima , Taiji Mitsuyama , Antal Kovats , Tamas Mihalffy , Lorand Romvari
IPC分类号： G01R31/36 , H01M10/48 , H02J7/00 , G01R31/392 , G01R31/3842 , G01R31/367 , G01R31/389
摘要： [Object] To detect states of a plurality of secondary batteries whose kinds are different with high accuracy.[Organization] A measurement unit (voltage sensor 11, current sensor 12) measuring a current value of a current flowing at a secondary battery 14 and a voltage value of a voltage generated at the secondary battery by the current in a predetermined frequency; an optimization unit (CPU 10a) optimizing element constants of an equivalent circuit model of the secondary battery based on the measured voltage value and the current value; an identification unit (CPU 10a) identifying a kind of the secondary battery with reference to the optimized element constants of the equivalent circuit model; a storage unit (ROM 10b) storing detection formulas which detect the state of the secondary battery by each kind of the secondary battery; an acquisition unit (CPU 10a) acquiring the detection formula corresponding to the identified kind from the storage unit; and a detection unit (CPU 10a) detecting the state of the secondary battery by applying the element constants to the acquired detection formula, are included.
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公开(公告)号：US10393820B2
公开(公告)日：2019-08-27
申请号：US14846682
申请日：2015-09-04
发明人： Taiji Mitsuyama , Noriyasu Iwane , Koichi Yokoyama , Naoya Takashima , Antal Kovats , Tamas Mihalffy , Lorand Romvari
IPC分类号： G01R31/389 , G01R31/392 , H01M10/44 , H01M10/48 , G01R31/36 , H02J7/00 , G01R31/3842
摘要： To provide a secondary battery state detecting device that decreases the deterioration in capacity of the secondary battery and is low in arithmetic cost.A secondary battery state detecting device that detects a state of a secondary battery includes discharge means (discharge circuit (15)) for subjecting the secondary battery (14) to a pulse discharge, acquiring means (controller (10)) for controlling the discharge means to subject the secondary battery to at least one pulse discharge, and acquiring a time variation of a voltage value at that time, calculating means (controller (10)) for calculating a parameter of a predetermined function having time as a variable by fitting the variation of the voltage value acquired by the acquiring means using the predetermined function, and detecting means (controller (10)) for detecting the state of the secondary battery on the basis of the parameter of the predetermined function calculated by the calculating means.
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