-
公开(公告)号：US20200335991A1
公开(公告)日：2020-10-22
申请号：US16920379
申请日：2020-07-02
Inventor： HIROAKI TSUKAMOTO , YOHSUKE MITANI , TAKAHIRO KUDO , YOSHIMITSU ODAJIMA
IPC: H02J7/00 , B60R16/033 , H01M10/44
Abstract: A power storage device includes an input terminal, an output terminal, a first circuit, and a second circuit. The input terminal is to be electrically connected to a power supply. The output terminal is to be electrically connected to a load. The first circuit and the second circuit are electrically connected in parallel. Each of the first circuit and the second circuit are disposed between the input terminal and the output terminal. The first circuit includes a power storage unit and a discharge path that allows a discharge current from the power storage unit to flow toward the output terminal. The second circuit includes a blocking path that prevents the discharge current from flowing toward the input terminal.
-
公开(公告)号：US20190173311A1
公开(公告)日：2019-06-06
申请号：US16324051
申请日：2017-08-30
Inventor： TAKAHIRO KUDO , YOHSUKE MITANI , YOSHIMITSU ODAJIMA
IPC: H02J7/14 , B60R16/033 , H02J9/06 , H02J7/00
Abstract: The present disclosure relates to a vehicle electricity storage device capable of maintaining proper backup of a main power supply. The vehicle electricity storage device includes an electricity storage circuit, a main charge circuit, and a precharge circuit. The electricity storage circuit configured to supply stored electricity to a load. The main charge circuit operates to supply electricity of a main power supply to the electricity storage circuit when an ignition switch is in an ON state of allowing an engine to start. The precharge circuit operates to supply electricity of the main power supply to the electricity storage circuit when the main charge circuit is in a state of stopping operation by the ignition switch being turned off.
-
3.发明公开公开(公告)号：US20240313765A1
公开(公告)日：2024-09-19
申请号：US18571215
申请日：2022-06-23
Inventor： HIROKI AKASHI , YOHSUKE MITANI , YUTA NAGATOMI , MASAFUMI NAKAMURA , MASATOSHI NAKASE , KINYA KATO , YASUHIRO IIJIMA
IPC: H03K17/30 , H03K17/06 , H03K17/081
CPC classification number: H03K17/302 , H03K17/063 , H03K17/08104 , H03K2217/0081
Abstract: In a backup power supply system according to the present invention, in a non-defective state in which a main power supply is not defective, a controller turns on a first field-effect transistor and causes a third field-effect transistor to operate in an active region so as to charge the power storage device from the main power supply via a charging path through the first field-effect transistor, the second field-effect transistor, and the third field-effect transistor. In a defective state in which the main power supply is defective, the controller turns off the first field-effect transistor and turns on the second field-effect transistor and the third field-effect transistor so as to supply power from the power storage device to the load.
-
公开(公告)号：US20220274551A1
公开(公告)日：2022-09-01
申请号：US17640996
申请日：2020-09-18
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.
-
Patent Agency Ranking
公开(公告)号：US20230192017A1
公开(公告)日：2023-06-22
申请号：US17998651
申请日：2021-05-18
Inventor： YOHSUKE MITANI , MASATOSHI NAKASE
IPC: B60R16/033 , H02J7/34 , H02J9/00
CPC classification number: B60R16/033 , H02J7/345 , H02J9/002 , H02J2207/20
Abstract: A back-up power supply system (1) is configured to supply electric power from an electric storage device (5) to loads (3) when a power supply (2) is defective. The back-up power supply system (1) includes a first voltage conversion circuit (6) configured to convert an output voltage of the electric storage device (5). The loads (3) include a first load (31) and a second load (32). The back-up power supply system (1) is configured to supply power from the electric storage device (5) to the first load (31) not via the voltage conversion circuit (6), and to supply electric power from the electric storage device (5) to the second load (32) via the voltage conversion circuit (6).
-
公开(公告)号：US20220255343A1
公开(公告)日：2022-08-11
申请号：US17629365
申请日：2020-07-28
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.
-
公开(公告)号：US20200010070A1
公开(公告)日：2020-01-09
申请号：US16491610
申请日：2017-08-28
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：US20180366973A1
公开(公告)日：2018-12-20
申请号：US16114581
申请日：2018-08-28
Inventor： TAKAHIRO KUDO , YOSHIMITSU ODAJIMA , YOHSUKE MITANI
CPC classification number: H02J7/345 , G05F3/26 , H01L29/866 , H02J7/00 , H02J7/025 , H02J50/05 , H02M3/3385
Abstract: A discharge circuit includes: a first transistor connected to power storage; an operational amplifier for controlling an output current of the first transistor; and the current mirror circuit connected to the operational amplifier. The current mirror circuit includes a second transistor connected to a non-inverting input terminal of the operational amplifier, and a third transistor connected to the power storage.
-
公开(公告)号：US20170278645A1
公开(公告)日：2017-09-28
申请号：US15622306
申请日：2017-06-14
Inventor： KIYOSHI WAKINAKA , YOHSUKE MITANI , KAZUKI MORITA
CPC classification number: H01G11/82 , H01G2/10 , H01G11/10 , H01G11/74 , H01G11/78 , H01M2/105 , H01M2/202
Abstract: An electricity storage unit of the present disclosure includes: electricity storage device; holder for holding this electricity storage device; bottomed tubular case for housing electricity storage device and holder; and cover for covering opening of case. At least a part of cover is inserted into case. With this configuration, since a surface on which a joint between cover and case is formed can be disposed on an opening side of case, it is possible to suppress intrusion of a foreign substance, such as a water droplet.
-
-
-
-
-
-
-
-
Search Results
9
records
(took 0.015 seconds)
