公开(公告)号：US20250116712A1

公开(公告)日：2025-04-10

申请号：US18730494

申请日：2023-01-06

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yusuke ITAKURA ,  Changhui YANG ,  Shinya NISHIKAWA

IPC: G01R31/3835 ,  G01R31/367 ,  G01R31/396

Abstract: In a battery abnormality detection system, a data acquirer acquires voltage data and current data of each cell of a battery pack having a plurality of cells connected in series or of each parallel cell block of a battery pack having serially connected parallel cell blocks having a plurality of cells connected in parallel. The abnormality detector detects a cell or parallel cell block in an abnormal state on the basis of a relative voltage change amount among the plurality of cells or among the plurality of parallel cell blocks in a constant voltage charging period.

公开(公告)号：US20250052823A1

公开(公告)日：2025-02-13

申请号：US18721151

申请日：2022-12-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takashi MATSUDA ,  Yusuke ITAKURA ,  Shinya NISHIKAWA ,  Masaaki TAKEGATA ,  Hiroshi TAKAO ,  Takashi IIDA

IPC: G01R31/374 ,  G01R31/367 ,  G01R31/3828 ,  G01R31/3842 ,  G01R31/396 ,  H01M10/48

Abstract: In a battery abnormality detection system, a data acquirer acquires a current flowing through a battery and a temperature of the battery. A determiner determines presence or absence of abnormal heat generation of the battery based on a relation between an amount of the current flowing through the battery in a certain period and a temperature rise of the battery in the certain period. The determiner determines the presence or absence of the abnormal heat generation of the battery based on the current and the temperature of the battery in a charging period in which the temperature of the battery exceeds a set temperature.