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公开(公告)号：US20240302441A1
公开(公告)日：2024-09-12
申请号：US18669768
申请日：2024-05-21
Applicant: DENSO CORPORATION
Inventor： Yoshinori MORITA
IPC: G01R31/3835 , H02J7/00
CPC classification number: G01R31/3835 , H02J7/0047
Abstract: A power supply monitoring device is applied to a power supply system. The system includes a first system having a first load and a second system having a second load. The first and second systems are connectable by an inter-system switch. The second system is connected with a power supply unit. In the first system, loads are connected in parallel as the first load, and fuses are provided to energization paths connected to the loads. The device includes a monitoring unit monitoring voltage reduction in the first system when the first and second loads are driven in a state in which the inter-system switch is closed, and a switch operation unit allowing the inter-system switch to conduct electricity in a state in which a conduction current in the inter-system switch is limited during a time period from voltage reduction, if the monitoring unit determines that the voltage reduction has occurred.
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公开(公告)号：US20170291494A1
公开(公告)日：2017-10-12
申请号：US15480571
申请日：2017-04-06
Applicant: DENSO CORPORATION
Inventor： Yoshinori MORITA
CPC classification number: B60L7/18 , B60L7/26 , B60L15/2009 , B60L58/12 , B60L58/20 , H02P3/04 , H02P3/14 , Y02T10/645 , Y02T10/7005 , Y02T10/7044 , Y02T10/7066 , Y02T10/72 , Y02T10/7275
Abstract: An electric power generation control device applied to a system including a generator capable of regenerative electric power generation, an electric power storage device capable of being charged with electric power, and a friction brake device that generates a braking force. The control device includes an operation amount acquisition unit that acquires a brake operation amount by the driver, an electric power generation amount acquisition units that increase a target electric power generation amount for the generator the larger the brake operation amount is, and have plural relationships of which the target electric power generation amounts that correspond to a certain brake amount differ, and acquire the target electric power generation amount according to one of the relationships based on change in the brake operation amount, and an electric power generation amount instruction unit that controls the generator based on the target electric power generation amount.
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公开(公告)号：US20190299973A1
公开(公告)日：2019-10-03
申请号：US16365843
申请日：2019-03-27
Applicant: DENSO CORPORATION
Inventor： Yoshinori MORITA
Abstract: A control apparatus is used in a vehicle equipped with an internal combustion engine, a rotating electrical machine, and a storage battery. The control apparatus stops the engine when a state of charge (SOC) of the storage battery is higher than a lower limit, and an automatic stop condition is met and also restarts the engine when the SOC of the storage battery is lower than the lower limit, and an automatic restart condition is met. The control apparatus also controls operation of the rotating electrical machine to generate electricity to increase the SOC above a target SOC and also actuates the rotating electrical machine to assist in driving the vehicle when the SOC is higher than a torque assist enable SOC. The target SOC is set higher than the lower limit. The torque assist enable SOC is set higher than the target SOC. This improves the fuel economy.
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公开(公告)号：US20170342953A1
公开(公告)日：2017-11-30
申请号：US15607794
申请日：2017-05-30
Applicant: DENSO CORPORATION
Inventor： Yoshinori MORITA
CPC classification number: F02N11/0866 , F02N11/04 , F02N11/0833 , F02N2200/061 , F02N2200/0801 , F02N2200/0809 , H02J7/0068 , H02J7/14 , H02J7/1461 , H02J9/002
Abstract: In a control apparatus mounted in a vehicle supporting start-stop control, for controlling a power supply system, a target charge level setter variably sets a target charge level of a second rechargeable battery when an internal-combustion engine of the vehicle is operating. The target charge level setter sets the target charge level to a higher level as load current increases, and when setting the target charge level, performs at least one of subtracting a first load quantity indicative of a current that is supplied to first electrical loads from a detected value of the load current and adding a second load quantity indicative of a current that is supplied to second electrical loads to the detected value of the load current. The first electrical loads operate when the internal-combustion engine is operating, and the second electrical loads operate when the engine is not operating.
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公开(公告)号：US20210354588A1
公开(公告)日：2021-11-18
申请号：US17391170
申请日：2021-08-02
Applicant: DENSO CORPORATION
Inventor： Yoshinori MORITA
Abstract: In a driving control device that controls a driving system for a vehicle, a voltage detection unit acquires a voltage value for each of cells of the battery as a cell voltage value, an abnormality determination unit determines an abnormality in voltage detection system for each of the cells based on the cell voltage value, and a rank setting unit sets ranks of the plurality of cells based on a parameter involved in failure in the battery. A fail-safe running unit determines a mode of fail-safe running of the vehicle based on the rank of the cell to be detected by the voltage detection system determined to have an abnormality, and a rotating electric machine control unit controls the rotating electric machine based on the mode of fail-safe running of the vehicle determined by the fail-safe running unit.
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Patent Agency Ranking
公开(公告)号：US20210354586A1
公开(公告)日：2021-11-18
申请号：US17391183
申请日：2021-08-02
Applicant: DENSO CORPORATION
Inventor： Yoshinori MORITA , Shingo KAWAHARA
Abstract: In a driving control device that controls a driving system for a vehicle, a voltage monitoring unit determines an abnormality in voltage detection and a current monitoring unit determines that power is supplied to the battery when a battery has a current value on a charge side relative to a predetermined value. When the voltage monitoring unit determines that the voltage detection is abnormal, a running control unit controls a rotating electric machine in such a manner that the vehicle is brought in a fail-safe running state. A power supply control unit controls a power supply source to be in a power supply prohibition state. A switch control unit cuts off a switch, in a case where it is determined that power is supplied to the battery during the power supply prohibition state of the power supply source.
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公开(公告)号：US20200216003A1
公开(公告)日：2020-07-09
申请号：US16826435
申请日：2020-03-23
Applicant: DENSO CORPORATION
Inventor： Yoshinori MORITA
IPC: B60R16/033 , B60R16/04
Abstract: A vehicle power supply system, a controlled unit is connected to a controllee power supply system that is one of a first power supply system and a second power supply system of the vehicle power supply system. A parameter acquiring unit is connected to a controller power supply system that is another one of the first power supply system and the second power supply system and configured to acquire a parameter indicating a sign of voltage change of the controllee power supply system. An operation setting unit is configured to predict the voltage change of the controllee power supply system in response to the sign indicated by the parameter and set a power supply state of the controlled unit indicating at least one of a number of drive pulses per unit time, a duty ratio, and a drive current so as to obtain a constant output from the controlled unit.
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公开(公告)号：US20240291273A1
公开(公告)日：2024-08-29
申请号：US18659651
申请日：2024-05-09
Applicant: DENSO CORPORATION , DENSO TEN Limited
Inventor： Yoshinori MORITA , Kohei Yamamoto , Yasunori Koduki
Abstract: A power source supervisory apparatus is provided with a connection path that connects between a first path and a second path, an inter-path switch SW provided on the connection path, a current limiting element disposed to be in series to the inter-path switch SW on the connection path enabling a conduction from a first path side to a second path side under a current limiting state and obstructing conduction from the second path side to the first path side, a supervisory unit that supervises occurrence of a voltage drop on the first path in a state where the inter-switch is closed, and a switch operation unit that opens the inter-path switch SW when the supervisory unit determines that a voltage drop occurs on the first path.
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公开(公告)号：US20190299968A1
公开(公告)日：2019-10-03
申请号：US16366096
申请日：2019-03-27
Applicant: DENSO CORPORATION
Inventor： Yoshinori MORITA
Abstract: A control apparatus is used with a vehicle including an engine, a storage battery, and an electrical load. The control apparatus works as an automatic engine stop and restart system and calculates a SOC lower limit that is a minimum value of state of charge (SOC) of the battery required to continue to stop the engine in an idle stop mode. The control apparatus also calculates an amount of electric power expected to be consumed by the electrical load during the idle stop mode and determines an idle stop enable SOC at which the idle stop mode is entered and which is selected to be the sum of the SOC lower limit and a SOC of the battery which at least compensates for the consumed amount of electric power. This ensures chances to stop the engine in the idle stop mode and improves fuel economy.
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公开(公告)号：US20170341517A1
公开(公告)日：2017-11-30
申请号：US15608289
申请日：2017-05-30
Applicant: DENSO CORPORATION
Inventor： Yoshinori MORITA
CPC classification number: B60L3/0046 , B60L1/00 , B60L11/12 , B60L11/14 , B60L11/1862 , B60L11/1868 , B60L2240/547 , G01R31/3658 , Y02T10/7005 , Y02T10/7022 , Y02T10/7044 , Y02T10/7066 , Y02T10/7077
Abstract: In a control apparatus mounted in a vehicle and configured to control a power supply system, a power generation controller is configured to operate an alternator such that a charge level of a second rechargeable battery becomes a target charge level. A target charge level setter is configured to variably set the target charge level of the second rechargeable battery based on changes in state quantity correlated with at least one of a charge state and a discharge state of the second rechargeable battery. A limiter is configured to, if there is a change in the state quantity and if a prescribed permission condition is not met, limit the operation of the alternator.
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