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公开(公告)号：US10386400B2
公开(公告)日：2019-08-20
申请号：US15401354
申请日：2017-01-09
发明人： Shota Kawanaka , Sho Tamura , Takahiro Okada , Hiromasa Tanaka
IPC分类号： G01R31/00 , G01R31/12 , G01R31/327 , G01R31/02
摘要： An abnormality detection device includes a measuring unit 14c and a determining unit 14d. The measuring unit 14c measures, among a power supply, a capacitor, a load circuit, a switch connecting the power supply to the load circuit, and ground of a vehicle body, which are mounted on a vehicle, a first voltage of the capacitor charged by serially connecting the power supply, the capacitor, and the body ground in a state where the switch is controlled to be turned off. The determining unit 14d determines that the switch is not fixed in an ON state and an insulation resistance of the vehicle is normal when the first voltage measured by the measuring unit 14c is less than a first threshold.
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公开(公告)号：US10114056B2
公开(公告)日：2018-10-30
申请号：US15433404
申请日：2017-02-15
摘要： A power-supply monitoring device includes a capacitor that is connected to an insulated electric power source to execute charging/discharging. A power-supply monitoring device including this capacitor forms a charging path for detecting deterioration in an insulation resistance of an electric power source, and detects a voltage of the capacitor when being charged through this charging path. A vehicle controller specifies an abnormal part based on whether or not the voltage of the capacitor detected by the power-supply monitoring device is within a predetermined range.
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公开(公告)号：US10197619B2
公开(公告)日：2019-02-05
申请号：US15346156
申请日：2016-11-08
申请人： FUJITSU TEN LIMITED
发明人： Shota Kawanaka , Sho Tamura
IPC分类号： G01R31/26 , B60L11/18 , G01R31/327 , G01R31/36 , G01R31/00
摘要： A power supply monitoring apparatus includes: a plurality of power supplies that are connected in series; and a capacitor that is connected to each of positive and negative electrodes of the plurality of power supplies via a plurality of switch elements. The power supply monitoring apparatus determines states of the plurality of switch elements, using a voltage value of the capacitor that is acquired when a first switch element of the plurality of switch elements is turned on, the first switch element being connected to one of a total negative-electrode side and a total positive-electrode side of the plurality of power supplies.
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公开(公告)号：US10343524B2
公开(公告)日：2019-07-09
申请号：US15416811
申请日：2017-01-26
申请人： FUJITSU TEN LIMITED
发明人： Shota Kawanaka , Sho Tamura
IPC分类号： G01R31/00 , G01R31/02 , B60L3/00 , G01R31/327
摘要： A weld detection apparatus is mounted on a vehicle and measures first and second voltages of a first capacitor. The first voltage is measured when the first capacitor is charged while connected in series to a power supply and a ground of a vehicle body while switches that connect the power supply to a load circuit are controlled to be in a first state. The second voltage is measured at a predetermined timing, when the first capacitor is charged while connected in series to the power supply and the ground of the vehicle body while the switches are controlled to be in a second state different from the first state. The apparatus performs a weld detection process to decide which of the switches is welded in an ON-state when a difference between the first and second voltages is equal to or smaller than a predetermined threshold value.
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公开(公告)号：US09864013B2
公开(公告)日：2018-01-09
申请号：US15053242
申请日：2016-02-25
申请人： FUJITSU TEN LIMITED
发明人： Shota Kawanaka
CPC分类号： G01R31/3627 , G01R27/025 , G01R31/028
摘要： A deterioration detecting apparatus includes: a capacitor that is connected to an insulated electric power source, and is charged and discharged; a voltage detecting unit that detects a voltage of the capacitor; and a deterioration detecting unit that detects a deterioration in an insulating resistor of the electric power source on the basis of the voltage of the capacitor charged through a charging path for detecting a deterioration in the insulating resistor of the electric power source, and the voltage of the capacitor during discharging.
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公开(公告)号：US10161980B2
公开(公告)日：2018-12-25
申请号：US15045402
申请日：2016-02-17
申请人： FUJITSU TEN LIMITED
发明人： Shota Kawanaka , Sho Tamura
摘要： A deterioration detecting apparatus includes: a capacitor that is connected to an insulated electric power source, and is charged and discharged; a voltage detecting unit that detects a voltage of the capacitor; and a deterioration detecting unit that detects a deterioration in insulating resistors of the electric power source on the basis of the voltage of the capacitor detected by the voltage detecting unit, in which the voltage detecting unit can detect the charged negative voltage of the capacitor.
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公开(公告)号：US09995782B2
公开(公告)日：2018-06-12
申请号：US15362054
申请日：2016-11-28
申请人： FUJITSU TEN LIMITED
发明人： Shota Kawanaka , Sho Tamura
CPC分类号： G01R31/1272 , G01R27/025 , G01R31/007
摘要： An insulation problem detection apparatus includes a microcomputer configured to: control a voltage detecting circuit to measure an insulation resistance of a vehicle based on a voltage at which a capacitor in the vehicle is charged, the microcomputer controlling the voltage detecting circuit to connect the capacitor in series to a power supply mounted in the vehicle and a ground of a body of the vehicle to measure the voltage at which the capacitor is charged; obtain a total voltage of the power supply from an external apparatus that is external to the microcomputer when the insulation resistance of the vehicle is measured by the voltage detecting circuit; and detect whether there is an insulation problem of the vehicle based on (i) the total voltage of the power supply obtained from the external apparatus and (ii) the insulation resistance of the vehicle measured by the voltage detecting circuit.
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