公开(公告)号：US20170274794A1

公开(公告)日：2017-09-28

申请号：US15504058

申请日：2016-01-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： HIROSHI TENMYO ,  MUTSUHIKO TAKEDA ,  SHINICHI YUASA

IPC: B60L11/18 ,  G01R31/36 ,  B60W10/26 ,  H01M10/48

Abstract: A battery status estimation device includes an SOC determination unit for determining whether a charge rate of a battery should be estimated based on a full charge capacity or a dischargeable capacity of the battery, a full charge capacity estimation unit for estimating the full charge capacity, a discharge capacity estimation unit for estimating the dischargeable capacity, and a current integrated estimation unit for estimating the charge rate of the battery based on the full charge capacity or the dischargeable capacity.

公开(公告)号：US20190113580A1

公开(公告)日：2019-04-18

申请号：US16218536

申请日：2018-12-13

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： HIROSHI TENMYO ,  SHINICHI YUASA ,  TOMOKAZU SADA

IPC: G01R31/3842 ,  H01M10/48 ,  H02J7/00 ,  G01R31/388 ,  H01M10/44

Abstract: A voltage detection unit detects voltage between both ends of a power storage unit. A current detection unit detects current flowing through the power storage unit. A control unit estimates a state of charge (SOC) of the power storage unit using an open circuit voltage (OCV) method based on the voltage detected by the voltage detection unit and estimates the SOC of the power storage unit using a current integration method based on the current detected by the current detection unit. The control unit compares the SOC estimated using the OCV method with the SOC estimated using the current integration method to determine whether micro short circuit occurs in the power storage unit.

公开(公告)号：US20210273270A1

公开(公告)日：2021-09-02

申请号：US17254289

申请日：2019-05-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： HIROSHI FUJIKAWA ,  SHINICHI YUASA ,  YOSHITO KAGA ,  KEISUKE NAITO

IPC: H01M10/44 ,  H02J7/00 ,  B60L58/12 ,  B60L58/26 ,  B60L50/60 ,  B60L53/00 ,  H01M10/48 ,  H01M10/613 ,  H01M10/625 ,  H01M10/633 ,  H01M10/643 ,  H01M10/647 ,  H01M10/6568 ,  H01M10/6556

Abstract: In a battery system, a battery module includes a plurality of cells. A management unit manages charging-discharging of the battery module and a temperature inside the battery module. The management unit estimates a maximum temperature of an inside of a cell in the battery module based on a measured temperature in the battery module, and controls, during charging-discharging of the battery module, a charging-discharging current of the battery module and/or cooling of the battery module in such a way that the estimated maximum temperature does not exceed an upper limit temperature.