公开(公告)号：US20220200328A1

公开(公告)日：2022-06-23

申请号：US17440766

申请日：2020-03-06

Applicant: GS Yuasa International Ltd.

Inventor： Yuki MATSUDA ,  Masakatsu FUJIMATSU ,  Naoya WADA ,  Naoya WADA ,  Satoshi KUNITA

IPC: H02J9/06 ,  H02J7/00 ,  H02J7/34 ,  H02H3/08 ,  H02H7/18 ,  H02H7/16 ,  H01M10/42 ,  H01M10/48 ,  B62J43/30 ,  F02N11/08 ,  F02N11/10

Abstract: A BMU (management apparatus) of a secondary battery (energy storage device) includes a management part that operates by power supplied from the secondary battery, and a capacitor (backup power source) that supplies power to the management part when a voltage of the secondary battery decreases.

公开(公告)号：US20200343598A1

公开(公告)日：2020-10-29

申请号：US16758356

申请日：2018-11-02

Applicant: GS Yuasa International Ltd.

Inventor： Naoya WADA ,  Eiji HAYASHI ,  Masashi NAKAMURA ,  Yuki MATSUDA

IPC: H01M10/48 ,  H01M10/42

Abstract: A management device 50 for power storage elements is provided with a cause analysis unit 51 that, when the voltages of power storage elements B1-B4 are reduced to a prescribed level or physical quantities correlated with the voltages are reduced to prescribed values after the supply of power to the power storage elements B1-B4 has been stopped, analyzes the cause of the voltage reduction in power storage elements B1-B4 or the cause of the reduction in the physical quantities correlated with voltages to the prescribed values, on the basis of measurement data of the power storage elements B1-B4 measured after the supply of power has been stopped.