Title:
DETERIORATION DETECTION METHOD
Document Type and Number:
Japanese Patent JP2022029182
Kind Code:
A
Abstract:
To provide a technology of detecting the state of a secondary battery in a simpler way.SOLUTION: In a state detection method in a system including an auxiliary battery of a vehicle, and a control unit that controls the auxiliary battery, the auxiliary battery is configured with lithium iron phosphate contained in a positive electrode, and the control unit executes obtaining a time required for a voltage of the auxiliary battery to reach a predetermined voltage from the starting voltage by discharging, and determining that the auxiliary battery is deteriorated when the acquired time is less than or equal to a threshold value.SELECTED DRAWING: Figure 5
Inventors:
KOIDE TAKESHI
Application Number:
JP2020132403A
Publication Date:
February 17, 2022
Filing Date:
August 04, 2020
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
H01M10/48; G01R31/382; G01R31/3835; G01R31/385; G01R31/388; G01R31/392; H01M10/44; H02J7/00
Attorney, Agent or Firm:
Yoshiyuki Inaba
Toshifumi Onuki
Akihiko Eguchi
Toshifumi Onuki
Akihiko Eguchi