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公开(公告)号：US12230997B2
公开(公告)日：2025-02-18
申请号：US17991412
申请日：2022-11-21
Applicant: DENSO CORPORATION
Inventor： Tetsuo Morita
Abstract: A power system has: an electrical load; first and second lines respectively including first and second power sources; and inter-line switch. The first power source outputs a power supply voltage. The second power source includes a storage battery. The power system includes: an anomaly determination unit determining an anomaly in the first line; a state control unit opening the inter-line switch if the occurrence of an anomaly is determined; first and second paths in parallel to each other between a connection point to the connection path and the second power source in the second line; a charging unit on the first path to charge the storage battery to a higher voltage than the power supply voltage of the first power source; and a discharge regulation unit on the second path to regulate discharge of the storage battery in the second line.
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公开(公告)号：US12065091B2
公开(公告)日：2024-08-20
申请号：US17550704
申请日：2021-12-14
Applicant: DENSO CORPORATION
Inventor： Tetsuo Morita
IPC: B60R16/033 , H02H7/18 , H02J1/08 , H02J7/14
CPC classification number: B60R16/033 , H02H7/18 , H02J1/08 , H02J7/1423 , H02J7/1438 , H02J2207/10 , H02J2310/40
Abstract: A power supply system includes a first power output portion, a second power output portion, and a ring-form main pathway. A power supply system includes a first output pathway connecting the main pathway with the first power output portion, a second output pathway connecting the main pathway with the second power output portion, and a loading pathway connecting the main pathway with an electric load. The power supply system includes multiple main switches and a control unit. The main switch is configured to switch between a ring connection state and a non-ring connection state of the main pathway. The control unit controls the switching of the main switch. The control unit is configured to activate a non-ring connection mode that turns off one of the main switches and turns on the remainder of the main switches.
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公开(公告)号：US12206275B2
公开(公告)日：2025-01-21
申请号：US18206719
申请日：2023-06-07
Applicant: DENSO CORPORATION
Inventor： Tetsuo Morita
Abstract: A power source system has a first system having a first power supply path and a first power source supplying a power source voltage, a second system having a second power supply path and a second power source having a battery being charged by the power source voltage, an intersystem switch, a switching controller switching the intersystem switch between an open state and a closed state, and a charging discharging part, arranged between the second power source and a connection node of a connection path on the second power supply path. The charging discharging part performs charging of the battery by the power source voltage and discharging of the battery based on a discharging request after completion of battery charging, and performs charging of the battery before the switching controller switches the intersystem switch to the open state from the closed state when overvoltage occurs in any system under the closed state of the intersystem switch.
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公开(公告)号：US11919420B2
公开(公告)日：2024-03-05
申请号：US17720787
申请日：2022-04-14
Applicant: DENSO CORPORATION
Inventor： Tetsuo Morita
CPC classification number: B60L58/19 , B60L3/0046 , B60L3/04 , B60L50/64
Abstract: A power supply system includes: an inter-load switch including a first switch and a second switch connected in series, a voltage generation unit, an electric storage device connected between the first switch and the second switch, a first state control unit configured to select a first state in which power is supplied from at least one of the voltage generation unit or the electric storage device to a first load and a second load, and a second state control unit configured to, when determining that a failure has occurred, select a second state in which power is supplied from the electric storage device to a load on a side of a no-failure-occurrence system in which no failure has occurred, by turning off a switch on a side of a failure-occurrence system in which a failure has occurred and turning on a switch on a side of the no-failure-occurrence system.
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公开(公告)号：US20240339861A1
公开(公告)日：2024-10-10
申请号：US18744935
申请日：2024-06-17
Applicant: DENSO CORPORATION
Inventor： Tetsuo Morita
CPC classification number: H02J9/061 , H02J7/0048 , H02J7/0063 , H02J7/34 , H02J2310/40
Abstract: A power source monitoring device for a power supply system equipped with a first system including a first power source and a second system including a second power source. An inter-system switch is closed under an operational state to supply power to electrical loads connected to the first and second systems. The first power source includes a voltage generation unit configured to generate an operating voltage for the electrical loads, and the second power source includes a power storage device chargeable by the voltage generation unit. The power source monitoring device includes a charging control unit configured to, under the operational state, close the inter-system switch and cause the voltage generation unit to charge the power storage device, and a dark current supply unit configured to, under a non-operational state, close the inter-system switch and supply dark current from the power storage device to the electrical loads.
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Patent Agency Ranking
公开(公告)号：US11949260B2
公开(公告)日：2024-04-02
申请号：US17226246
申请日：2021-04-09
Applicant: DENSO CORPORATION
Inventor： Tetsuo Morita
CPC classification number: H02J7/0024 , B60R16/03 , H02H3/08 , H02J7/1423
Abstract: An inductance component has a given value causing a time constant of a circuit composed of one of first and second routes in which an abnormality does not occur and a connection path connecting the first and second routes not to allow a voltage of one of loads disposed in the other one of the routes to decrease to less than a lower limit of an operating voltage of one of loads during a shut-off period, which starts from a time when it is determined by an abnormality determiner that an abnormality has occurred in any one of the first route and the second route to a time when an inter-route switch enters a switched off state upon receiving a switch-off command from a state controller.
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公开(公告)号：US10302060B2
公开(公告)日：2019-05-28
申请号：US15000707
申请日：2016-01-19
Applicant: DENSO CORPORATION
Inventor： Tetsuo Morita
Abstract: An electric power control apparatus for a vehicle includes a first determination section determining an activation of a jump start, a second determination section determining a connection of an external power source having a higher voltage than a battery voltage of the vehicle, a third determination section determining whether the engine switches to an engine start completed state, a keep section keeping an electric power generation unit of the vehicle in an electric power generation deactivated state when determining that the engine switches to the engine start completed state, a fourth determination section determining a disconnection of the external power source, and an instruction section instructing an immediate activation of the electric power generation to the electric power generation unit when determining the disconnection of the external power source.
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公开(公告)号：US12202419B2
公开(公告)日：2025-01-21
申请号：US18139995
申请日：2023-04-27
Applicant: DENSO CORPORATION
Inventor： Tetsuo Morita
IPC: B60L1/00 , B60L3/00 , B60L58/20 , B60R16/033 , H01M10/44 , H01M10/48 , H02J7/00 , H02J7/34 , H02J9/06
Abstract: A power supply system includes: a first system having a first power supply; a second system having a second power supply; and an inter-system switch provided in a connection path connecting the first and second systems. First and second paths are provided in parallel between a connection point, at which the connection path is connected with the second system, and the second power supply. The power supply system further includes: a charging unit provided in the first path to charge, with the inter-system switch closed, a storage battery of the second power supply; a discharge restriction unit provided in the second path to restrict discharge of the storage battery; an abnormality determination unit that determines whether an abnormality has occurred in the discharge restriction unit; and a use restriction unit that restricts use of the second power supply upon determination that an abnormality has occurred in the discharge restriction unit.
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公开(公告)号：US09705319B2
公开(公告)日：2017-07-11
申请号：US13774221
申请日：2013-02-22
Applicant: DENSO CORPORATION
Inventor： Tetsuo Morita
CPC classification number: H02J1/00 , B60R16/03 , H01M10/052 , H01M10/425 , H01M10/48 , H01M2220/20 , H02J1/06 , H02J7/1423 , Y02E60/122 , Y10T307/696
Abstract: A power supply system includes a first-battery, a battery unit including a second-battery, and a generator. The battery unit is connected to the generator and the first-battery via a conductor. The battery unit includes a connection-terminal connected to the conductor, an output-terminal connected to a load, a first-switch disposed on a wiring connecting the connection-terminal and the output-terminal, a branch line branching off from the wiring between the first-switch and the output-terminal and connected to the second-battery, a second-switch disposed on the branch line between the wiring and the second-battery, a first-voltage-detecting unit detecting voltage of the connection-terminal, and a switch control unit controlling the first and second-switches. The power supply system further includes a second-voltage-detecting unit detecting electromotive force of the first-battery, and a fault-determining unit determining a fault of the conductor based on opening/closing states of the first and second-switches and results of the first and second-voltage-detecting units.
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公开(公告)号：US12272942B2
公开(公告)日：2025-04-08
申请号：US18131501
申请日：2023-04-06
Applicant: DENSO CORPORATION
Inventor： Tetsuo Morita
IPC: H02H7/00 , B60R16/023 , H02H7/20
Abstract: A power supply system which includes a first system, a second system, and a system-to-system switch. The first system delivers electrical power from a first power supply to an electrical load through a first power feeding path. The second system delivers electrical power from a second power supply to the electrical load through a second power feeding path. The system-to-system switch is arranged in a connecting path which connects the first and second power feeding paths together. The power supply system also has an in-system switch which is disposed in the second power feeding path between a junction of the second power feeding path and the connecting path and the second power supply. When it is determined that a malfunction has occurred in the second system in a condition where the system-to-system switch and the in-system switch are closed, the system-to-system switch is opened. The power supply system controls an opening-closing operation of the in-system switch when the system-to-system switch is opened, thereby limiting flow of electrical current from the second power supply to the second system and prevents voltages applied to the system-to-system switch from undesirably dropping due to a surge voltage developed in the second system which arise from the limitation of flow of the electrical current.
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