公开(公告)号：US20210021000A1

公开(公告)日：2021-01-21

申请号：US16978549

申请日：2018-12-05

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tomokaza Sada ,  Masatoshi NAGAYAMA ,  Yukikazu OHCHI ,  Kazuya HAYAYAMA

IPC: H01M10/48 ,  H02J7/00 ,  G01R31/392 ,  G01R31/396 ,  G01R31/36 ,  G01R31/389

Abstract: A deterioration diagnosis unit 21a of an arithmetic unit 20 constituting a remaining performance evaluation system 3 diagnoses the deterioration degree of a secondary battery 5 that has already been used for primary use based on an actual measurement value. The deterioration speed update unit 21b updates the deterioration speed of the secondary battery 5 based on the diagnosis result of the secondary battery 5. The remaining performance estimation unit 21c estimates the remaining performance of the secondary battery 5 after the start of secondary use based on the updated deterioration speed and a usage method at the time of the secondary use of the secondary battery 5.