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公开(公告)号：US20220306020A1
公开(公告)日：2022-09-29
申请号：US17487762
申请日：2021-09-28
Applicant: DENSO TEN Limited
Inventor： Takeshi MATSUMOTO , Daiki HAKUSHIMA , Keiichi YONEZAKI
IPC: B60R16/033 , H02H3/08 , H02H7/28 , H02J7/14
Abstract: A power supply device includes: a first system; a second system; an inter-system switch configured to be able to connect and disconnect between the first system and the second system; a determining unit configured to keep the inter-system switch in an ON state in a normal time, and turn off the inter-system switch and determine which system a ground fault has occurred in, if detecting a ground fault of the first system or the second system; and a suppression circuit configured to suppress an electric discharge of the second power supply and supply electric power for ground fault detection to the second system, and the determining unit determines whether any ground fault has occurred in the second system or not, based on the electric power which is supplied from the suppression circuit to the second system.
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公开(公告)号：US20240331466A1
公开(公告)日：2024-10-03
申请号：US18436454
申请日：2024-02-08
Applicant: DENSO TEN Limited
Inventor： Shunsuke KOBAYASHI , Takeshi MATSUMOTO
IPC: G07C5/08 , B60Q1/50 , B60W50/023 , B60W50/14 , B60W60/00
CPC classification number: G07C5/0816 , B60W50/023 , B60W50/14 , B60W60/0015 , B60Q1/507 , B60W2510/244 , B60W2554/406 , B60W2555/20
Abstract: A control device includes: a controller mounted on a vehicle having an autonomous driving function and configured to execute fail-safe control by a backup power supply when a main power supply fails. The controller is configured to: in the fail-safe control, when a remaining charge level of the backup power supply decreases to or below a first threshold set in advance, execute a first notification to notify in advance an inside of the vehicle that the vehicle is likely to stop due to a shortage of the remaining charge level of the backup power supply; and when the remaining charge level of the backup power supply decreases to or below a second threshold that is smaller than the first threshold, execute a second notification to notify an outside of the vehicle that the vehicle stops.
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公开(公告)号：US20240258825A1
公开(公告)日：2024-08-01
申请号：US18425810
申请日：2024-01-29
Applicant: DENSO TEN Limited
Inventor： Daiki HAKUSHIMA , Takeshi MATSUMOTO
CPC classification number: H02J9/06 , B60L1/02 , B60L1/14 , H02J2310/48
Abstract: A controller of a power supply control device includes: a comparison circuit configured to compare a parameter related to a power supply failure of a first system or of a second system with a threshold and to output a detection signal indicating an occurrence of the power supply failure; a pulse generator configured to output a pulse signal having a predetermined pulse width in response to receiving the detection signal and to disconnect the connection device to disconnect connection between the first system and the second system during a period in which the pulse signal is output; a latch circuit configured to latch the pulse signal; and a microcomputer configured to periodically acquire a latch state of the latch circuit and to determine, in response to detecting that the pulse signal is latched, in which of the first system and the second system the power supply failure occurs.
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公开(公告)号：US20230198289A1
公开(公告)日：2023-06-22
申请号：US17698413
申请日：2022-03-18
Applicant: DENSO TEN Limited
Inventor： Takeshi MATSUMOTO , Daiki HAKUSHIMA , Shunsuke KOBAYASHI
CPC classification number: H02J9/061 , H02J9/068 , B60L53/20 , B60L3/0069 , B60L2210/10
Abstract: A power supply control apparatus includes: a first system capable of supplying electric power from a first power supply to a first load; a second system capable of supplying electric power from a second power supply to a load group including a second load and a third load having consumed electric power smaller than that of the second load; a plurality of load switches as defined herein; and a control unit configured to control the load switches so that backup control performed by the second system is executed by the electric power supply from the second power supply, in a case where an occurrence of a ground fault in the first system is detected, and when the control unit inspects as to whether the backup control can be executed, the control unit connects the load switch corresponding to the third load of the load group to execute the inspection.
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公开(公告)号：US20230077421A1
公开(公告)日：2023-03-16
申请号：US17700070
申请日：2022-03-21
Applicant: DENSO TEN Limited
Inventor： Takeshi MATSUMOTO , Daiki HAKUSHIMA
Abstract: A power supply control apparatus includes: a first system configured to supply electric power of a first power supply to a first load; a second system configured to supply electric power of a second power supply to a second load; an inter-system switch provided in a connection path that connects the first system to the second system, and capable of connecting the first system to the second system and disconnecting the first system from the second system; a primary ground fault detection unit configured to cut off the inter-system switch when a ground fault of the first system or the second system is detected by the primary ground fault detection unit; a secondary ground fault detection unit as defined herein; and a mask processing unit as defined herein.
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Patent Agency Ranking
公开(公告)号：US20230242136A1
公开(公告)日：2023-08-03
申请号：US17948762
申请日：2022-09-20
Applicant: DENSO TEN Limited
Inventor： Kosuke SATO , Takeshi MATSUMOTO , Minoru YOSHIMURA , Yasuomi KIMURA
CPC classification number: B60W50/14 , B60W60/0059 , B60W2050/143 , B60W2050/146
Abstract: A control device includes a controller configured to perform a notification whether automatic driving of a vehicle is able to be started, in a different mode according to at least either of a first state where the automatic driving is able to be permitted, a second state where the automatic driving is unable to be permitted due to an equipment abnormality, or a third state where the automatic driving is unable to be permitted for a temporary reason without an equipment abnormality.
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公开(公告)号：US20230198290A1
公开(公告)日：2023-06-22
申请号：US17699869
申请日：2022-03-21
Applicant: DENSO TEN Limited
Inventor： Shunsuke KOBAYASHI , Takeshi MATSUMOTO
Abstract: A power supply control device includes: a first system configured to supply electric power from a first power supply to a first load group; a second system configured to supply electric power from a second power supply to a second load group; a plurality of load switches configured to switch an electric power supply to each load of the first load group and the second load group; and a control unit configured to control the plurality of load switches such that electric power is supplied from the second power supply to a backup load included in at least one of the first load group and the second load group in a predetermined backup state, wherein the control unit detects a state of charge of the second power supply, and increases, in the predetermined backup state, number of the load switches to be connected as the state of charge is higher.
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公开(公告)号：US20230085180A1
公开(公告)日：2023-03-16
申请号：US17699705
申请日：2022-03-21
Applicant: DENSO TEN Limited
Inventor： Daiki HAKUSHIMA , Hiroshi MATSUMOTO , Takeshi MATSUMOTO
Abstract: A power supply control apparatus includes: a first system configured to supply electric power of a first power supply to a first load; a second system configured to supply electric power of a second power supply to a second load; an inter-system switch capable of connecting the first system to the second system and disconnecting the first system from the second system; a battery switch capable of connecting the second power supply to the second system and disconnecting the second power supply from the second system; a primary ground fault detection unit configured to cut off the inter-system switch and conduct the battery switch when a ground fault of the first system or the second system is detected by the primary ground fault detection unit; a secondary ground fault detection unit as defined herein; and a failure determination unit as defined herein.
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公开(公告)号：US20220368153A1
公开(公告)日：2022-11-17
申请号：US17479134
申请日：2021-09-20
Applicant: DENSO TEN Limited
Inventor： Daiki HAKUSHIMA , Takeshi MATSUMOTO
Abstract: A power supply control device includes a first system, a second system, an inter-system switch, a battery switch and a controller. The controller turns off an inter-system switch that connects and disconnects the systems and turns on a battery switch that connects and disconnects a second power supply to and from the second system in response to an abnormality of a first power supply or the second power supply being detected and thereafter turn on the inter-system switch and turns off the battery switch in response to determination that there is no abnormality in the power supplies. Before turning on the inter-system switch, when voltage difference between the power supplies is equal to or larger than a threshold, the controller performs convergence control, and after determining that there is no abnormality in the power supplies, the controller keeps the battery switch turned off while performing the convergence control.
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公开(公告)号：US20220302726A1
公开(公告)日：2022-09-22
申请号：US17462666
申请日：2021-08-31
Applicant: DENSO TEN Limited
Inventor： Takeshi MATSUMOTO , Hiroshi MATSUMOTO
IPC: H02J7/00
Abstract: An onboard power supply device includes: a first system; a second system; a first switch; a second switch; an abnormality detecting unit; and a switch setting unit configured to set a normal state, if occurrence of the power supply fault is not detected, and set a fail-safe state in which the first switch is in an OFF state, if occurrence of the power supply fault is detected, and after the first switch is set to the fail-safe state, with respect to each of the systems, the abnormality detecting unit detects whether any system power supply fault has occurred, and after the first switch is set to the fail-safe state, if occurrence of a system power supply fault is not detected from both of the systems, the switch setting unit sets each of the switches to the normal state.
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