18886160. BATTERY ABNORMALITY DIAGNOSIS DEVICE (TOYOTA JIDOSHA KABUSHIKI KAISHA)
Contents
BATTERY ABNORMALITY DIAGNOSIS DEVICE
Organization Name
TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor(s)
Akihiro Morita of Nisshin-shi (JP)
Hirotaka Ito of Nagoya-shi (JP)
BATTERY ABNORMALITY DIAGNOSIS DEVICE
This abstract first appeared for US patent application 18886160 titled 'BATTERY ABNORMALITY DIAGNOSIS DEVICE
Original Abstract Submitted
A battery abnormality diagnosis device, comprising: an acquisition unit that acquires multiple current values and multiple voltage values within a predetermined period of a battery; a calculation unit that calculates an internal resistance value of the battery based on a dispersion value of the current values, a variation amount of the charging rate of the battery, and the current values and the voltage values, within the predetermined period; and a diagnosis unit that executes abnormality diagnosis processing based on the internal resistance value, wherein the diagnosis unit executes the abnormality diagnosis processing based on the internal resistance value calculated when the dispersion value is equal to or more than a predetermined value and the variation amount is equal to or less than a first threshold, or when the dispersion value is less than the predetermined value and the variation amount is equal to or less than a second threshold.
