View source for Toyota jidosha kabushiki kaisha (20250130289). ABNORMALITY DETECTION METHOD AND ABNORMALITY DETECTION DEVICE

=ABNORMALITY DETECTION METHOD AND ABNORMALITY DETECTION DEVICE=


==Organization Name==

[[:Category:toyota jidosha kabushiki kaisha|toyota jidosha kabushiki kaisha]]


[[Category:toyota jidosha kabushiki kaisha]]

==Inventor(s)==

[[:Category:Kosuke Nishioka of Toyota-shi JP|Kosuke Nishioka of Toyota-shi JP]][[Category:Kosuke Nishioka of Toyota-shi JP]]

==ABNORMALITY DETECTION METHOD AND ABNORMALITY DETECTION DEVICE==


This abstract first appeared for US patent application 20250130289 titled 'ABNORMALITY DETECTION METHOD AND ABNORMALITY DETECTION DEVICE

==Original Abstract Submitted==

an abnormality detection method of a sub battery (lfp type battery) for backing up a main battery that includes the steps of charging the sub battery to a fully charged state, discharging a predetermined current amount from the fully charged sub battery, maintaining the sub battery in a state where the current becomes equal to or less than a predetermined value until a predetermined time elapses, discharging a detection current for detecting an abnormality of the sub battery from the sub battery after a predetermined time elapses, calculating a voltage drop amount, which is a difference between the cell voltage at the start of discharge of the detection current and the cell voltage at the end of discharge, for a plurality of battery cells constituting the sub battery, respectively, and determining that the sub battery is abnormal.



[[Category:G01R31/396]]
[[Category:G01R31/378]]
[[Category:G01R31/3842]]
[[Category:H01M10/42]]
[[Category:CPC_G01R31/396]]