公开(公告)号：US20200010070A1

公开(公告)日：2020-01-09

申请号：US16491610

申请日：2017-08-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TAKESHI UMEDA ,  YOHSUKE MITANI

IPC: B60T17/22 ,  B60R16/033 ,  H02J9/06 ,  G01R31/01 ,  G01R31/392 ,  G01R31/382

Abstract: A vehicle electricity storage device includes a capacitor unit for supplying stored electric power to an electronically controlled system, and a microcomputer including a memory. The memory stores a plurality of thresholds (internal resistance limit values) different from each other. Each of the plurality of thresholds is to be compared with an electrical characteristic value (internal resistance value) related to the capacitor unit for determining a deterioration state of the capacitor unit. The each of the plurality of thresholds is stored in association with an identification ID for identifying the electronically controlled system. The microcomputer acquires the identification ID from the electronically controlled system. And the microcomputer selects, from the plurality of thresholds, a threshold associated with the identification ID acquired. Then the microcomputer determines the deterioration state of the capacitor unit by using the electrical characteristic value and the threshold selected.

公开(公告)号：US20220274551A1

公开(公告)日：2022-09-01

申请号：US17640996

申请日：2020-09-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YOHSUKE MITANI ,  TAKESHI UMEDA

IPC: B60R16/033 ,  H02J9/06 ,  H02J7/00 ,  H02J7/34

Abstract: A backup power supply system of the present invention includes a first auxiliary power supply and a second auxiliary power supply capable of supplying electric power to a first load when failure of a main power supply occurs. In the backup power supply system, a second duration is shorter than a first duration. The first duration is the duration until the first auxiliary power supply becomes capable of supplying electric power to the first load. The second duration is the duration until the second auxiliary power supply becomes capable of supplying electric power to the first load.

公开(公告)号：US20220255343A1

公开(公告)日：2022-08-11

申请号：US17629365

申请日：2020-07-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YOHSUKE MITANI ,  TAKESHI UMEDA

IPC: H02J9/06 ,  H02J9/00 ,  H02J7/00 ,  B60R16/033

Abstract: A backup power-supply system according to the present invention includes a detector, a power storage unit, and a controller. The detector is configured to detect an abnormality of a power supply that supplies electric power to loads. The power storage unit is configured to supply electric power to the loads when the detector detects the abnormality of the power supply. The controller is configured to monitor a remaining electric energy remaining in the power storage unit, and impose, when the remaining electric energy of the power storage unit is smaller than a threshold electric energy, a limitation on the loads to which the power storage unit supplies the electric power.