公开(公告)号：US20250035709A1

公开(公告)日：2025-01-30

申请号：US18915824

申请日：2024-10-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tomokazu SADA ,  Masatoshi NAGAYAMA ,  Yukikazu OHCHI ,  Kazuya HAYAYAMA

IPC: G01R31/389 ,  G01R31/36 ,  G01R31/367 ,  G01R31/392 ,  G01R31/396 ,  H01M10/48 ,  H02J7/00

Abstract: A deterioration diagnosis unit of an arithmetic unit constituting a remaining performance evaluation system diagnoses the deterioration degree of a secondary battery that has already been used for primary use based on an actual measurement value. The deterioration speed update unit updates the deterioration speed of the secondary battery based on the diagnosis result of the secondary battery. The remaining performance estimation unit estimates the remaining performance of the secondary battery after the start of secondary use based on the updated deterioration speed and a usage method at the time of the secondary use of the secondary battery.

公开(公告)号：US20190170831A1

公开(公告)日：2019-06-06

申请号：US16273180

申请日：2019-02-12

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tomokazu SADA

IPC: G01R31/389 ,  G01R31/3842 ,  G01R31/392 ,  G01R31/396 ,  G01R19/165 ,  H01M10/44 ,  H01M10/42

Abstract: A control unit in a battery management apparatus discharges constant direct current from a battery for a predetermined time period or charges the battery with the constant direct current for the predetermined time period to diagnose a state of the battery. A change point is identified where a rise in voltage given by subtracting open circuit voltage of the battery from measured voltage of the battery is varied from a curved line shape to a straight line shape with respect to transition of an increase of a value in which an elapsed time since start of charge-discharge is defined as a square root of time. A rise in voltage from the voltage when the charge-discharge is started to the change point is identified as a rise in voltage caused by resistance components of electrolyte, a negative electrode, and a positive electrode of the battery and a rise in voltage after the change point is identified as a rise in voltage caused by a diffusion resistance component of the battery.

公开(公告)号：US20250033516A1

公开(公告)日：2025-01-30

申请号：US18713798

申请日：2022-11-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tomokazu SADA ,  Changhui YANG

IPC: B60L53/67 ,  B60L53/62 ,  B60L53/66 ,  B60L58/12

Abstract: A predicted distribution creation unit performs statistical processing on use histories of a plurality of battery packs used by being mounted on a moving body and creates a predicted distribution of the use amounts of the plurality of battery packs per day. A charging plan creation unit creates charging plans of the plurality of battery packs prepared for the operation of a target date on the basis of the created predicted distribution of the use amounts of the plurality of battery packs. The charging plan creation unit determines the distribution of charging end SOCs (State Of Charge) of the plurality of battery packs on the basis of the predicted distribution of the use amounts.

公开(公告)号：US20230134590A1

公开(公告)日：2023-05-04

申请号：US18089091

申请日：2022-12-27

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Takaaki FUKUNISHI ,  Ryosuke NAGUMO ,  Ryuji SAKATA ,  Takashi IIDA ,  Changhui YANG ,  Tomokazu SADA ,  Takashi MATSUDA

IPC: G01R31/392 ,  G01R31/396

Abstract: Provided is a server that executes: acquiring at least one deterioration characteristic calculation model of a storage battery based on a test; acquiring operation data on the storage battery after the test; acquiring a degree of deterioration of the storage battery in the operation data; inputting the operation data into the at least one deterioration characteristic calculation model to calculate at least one deterioration coefficient; inputting the operation data into a degree-of-deterioration calculation model for calculating a degree of deterioration of the storage battery to calculate a degree of deterioration using the at least one deterioration coefficient calculated; adjusting the at least one deterioration characteristic calculation model to calculate a degree of deterioration close to the degree of deterioration acquired; calculating at least one deterioration characteristic using the at least one deterioration characteristic calculation model adjusted; and outputting the at least one deterioration characteristic calculated.

公开(公告)号：US20200381784A1

公开(公告)日：2020-12-03

申请号：US16607316

申请日：2018-03-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takao YAMAMOTO ,  Tomokazu SADA ,  Hiroshi TENMYOU ,  Yukikazu OHCHI

IPC: H01M10/44 ,  H02J7/04 ,  H01M10/46 ,  H01M4/525 ,  H01M10/0525 ,  B60L53/22 ,  B60L50/64

Abstract: In this power supplying device used in this power storage system, a power supplying unit charges a battery. A control unit controls the power supplying unit so as to charge the battery in a pulsed manner, in at least a part of a charging period of the battery. The control unit extends a unit on time and a unit off time when charging in the pulsed manner, as the temperature of the battery becomes lower.