公开(公告)号：US20210126314A1

公开(公告)日：2021-04-29

申请号：US16493988

申请日：2018-03-12

Applicant: GS Yuasa International Ltd.

Inventor： Yoshihiro MASUDA ,  Shinpel ONO ,  Yasuyuki IWASHIMA ,  Yo HASEGAWA ,  Yuki MATSUDA ,  Shun SASAKI ,  Minoru WATANABE

IPC: H01M50/209 ,  H01M50/505 ,  H01M50/55 ,  H01M50/51

Abstract: An energy storage apparatus includes an energy storage device, a first wiring electrically connected to the energy storage device, a harness plate holding the first wiring, and a first connector connected to the first wiring, the first connector being located at a central portion of the harness plate and capable of detachably attaching an external wiring.

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.

公开(公告)号：US20220244316A1

公开(公告)日：2022-08-04

申请号：US17611818

申请日：2020-05-25

Applicant: GS Yuasa International Ltd.

Inventor： Yuki MATSUDA ,  Masakatsu FUJIMATSU

IPC: G01R31/3835 ,  G01R31/396 ,  H01M10/48

Abstract: A voltage measurement circuit includes: voltage dividing circuits that divide voltages of energy storage devices, in respective stages connected in series; switches that cut off the currents of the voltage dividing circuits in the respective stages, and a measurement unit that measures the voltages of the energy storage devices in the respective stages based on outputs of the voltage dividing circuits in the respective stages. The voltage dividing circuits in the respective stages each have a first resistor connected to the ground and a second resistor connected to a positive electrode of the corresponding energy storage device. The switch in a predetermined-number stage among the switches in the respective stages is an N-channel field-effect transistor (FET) having a source connected to the first resistor and a drain connected to the second resistor, and the source of the FET is a voltage output terminal with respect to the measurement unit.

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.