公开(公告)号：US12025676B2

公开(公告)日：2024-07-02

申请号：US17585936

申请日：2022-01-27

Applicant: DENSO CORPORATION

Inventor： Tomomi Asai ,  Nobuo Yamamoto ,  Hiroyasu Suzuki ,  Katsuki Hayashi ,  Yuya Minabe

IPC: G01R31/392 ,  G01R31/396 ,  H01M10/42

CPC classification number: G01R31/392 ,  G01R31/396 ,  H01M10/42

Abstract: A degradation degree assessment device for a secondary battery is to assess a degree of degradation of a secondary battery and includes a battery characteristic acquisition unit, a capacity estimation unit, and an assessment unit. The battery characteristic acquisition unit acquires a battery characteristic relating to a voltage transition of the secondary battery in a predetermined voltage section. The assessment unit assesses the degree of degradation of the secondary battery based on the battery characteristic acquired by the battery characteristic acquisition unit or based on a battery characteristic-related value computed on the basis of the battery characteristic.