US 12,352,820 B2
Server and external terminal for deterioration degree determination system for secondary battery, and deterioration degree determination system
Tomomi Asai, Kariya (JP); Nobuo Yamamoto, Kariya (JP); Hiroyasu Suzuki, Kariya (JP); Katsuki Hayashi, Kariya (JP); and Yuya Minabe, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Dec. 20, 2022, as Appl. No. 18/068,691.
Application 18/068,691 is a continuation of application No. PCT/JP2021/022682, filed on Jun. 15, 2021.
Claims priority of application No. 2020-113171 (JP), filed on Jun. 30, 2020.
Prior Publication US 2023/0122626 A1, Apr. 20, 2023
Int. Cl. G01R 31/392 (2019.01); G01R 31/371 (2019.01); G01R 31/3842 (2019.01); H02J 7/00 (2006.01)
CPC G01R 31/392 (2019.01) [G01R 31/371 (2019.01); G01R 31/3842 (2019.01); H02J 7/005 (2020.01)] 12 Claims
OG exemplary drawing
 
1. A server for a deterioration degree determination system that determines a deterioration degree for a secondary battery, the server comprising:
an estimation formula memory unit that stores an estimation formula for determining the deterioration degree based on a battery characteristic related to transition of a battery state over a predetermined voltage section in the secondary battery or a battery characteristic relationship value related to the battery characteristic, and a battery characteristic acquisition reference that is a reference of necessity determination of acquiring the battery characteristic of the secondary battery prepared in advance;
an update unit that updates the estimation formula stored in the estimation formula memory unit based on the battery characteristic related to the transition of the battery state of the secondary battery acquired by charging and discharging the secondary battery in an external terminal;
a necessity determination unit that determines necessity of acquiring the battery characteristic for each secondary battery based on a comparison result between battery information including information related to the secondary battery and the battery characteristic acquisition reference;
a transmission unit that transmits instruction information indicating acquisition of the battery characteristic of the secondary battery to the external terminal based on a determination result of the necessity determination unit; and
a receiving unit that receives acquired information acquired by the external terminal that has received the instruction information or the battery characteristic of the secondary battery based on the acquired information, from the external terminal, wherein
the update unit updates the estimation formula by using the battery characteristic of the secondary battery based on the acquired information received by the receiving unit.