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公开(公告)号：US10017071B2
公开(公告)日：2018-07-10
申请号：US15292456
申请日：2016-10-13
CPC分类号： B60L11/1864 , B60L15/025 , B60L15/20 , B60L58/16 , B60L58/21 , B60L2240/547 , B60L2240/80 , B60L2260/44 , G01R31/3271 , G01R31/3275 , G01R31/392 , H02J7/0045 , H02J7/0072 , H02J7/34 , H02J7/345 , H02P27/08 , Y02T10/643 , Y02T10/7005 , Y02T10/7061 , Y02T10/7275
摘要： An electrical system includes a voltage bus, battery pack, power inverter module (PIM), electric machine, first contactor, and controller. The PIM is connected to the battery pack and has a capacitor, voltage sensor, and semiconductor switches. The electric machine having phase legs with a corresponding phase winding and resistive path. The first contactor connects the PIM to a positive rail of the bus. The controller opens the first contactor in response to a power-off event, commands a discharge of the capacitor through the resistive paths, diagnoses a state of health (SOH) of the first contactor using a first threshold decay rate of the capacitor output voltage upon opening the first contactor, and executes a control action with respect to the electrical system using the diagnosed SOH. The three possible SOH are unhealthy/hard-welded contactor, unhealthy/soft-welded contactor, and healthy/normally-functioning contactor condition. A vehicle and method are also disclosed.
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公开(公告)号：US20170355350A1
公开(公告)日：2017-12-14
申请号：US15181972
申请日：2016-06-14
发明人： Andrew J. Namou , David J. Mifsud
CPC分类号： B60R25/04 , B60L1/00 , B60L11/18 , B60L11/1868 , B60L2270/20 , B60R16/04 , H02H9/001 , H02J1/00 , H02J7/0031 , Y02T10/7005 , Y02T10/7066
摘要： An electrical system includes a contactor having a pair of contacts and a coil configured to electrically close and open the contacts. The electrical system also includes a high voltage (“HV”) circuit including a power supply electrically connected to at least one of the contacts of the contactor. The electrical system further includes a low voltage (“LV”) circuit electrically connected to the coil and configured to selectively energize the coil of the contactor. A disconnect mechanism is coupled with the LV electrical circuit and operable to electrically open the LV electrical circuit to actuate electrical opening of the contacts of the contactor.
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公开(公告)号：US20170316905A1
公开(公告)日：2017-11-02
申请号：US15139719
申请日：2016-04-27
发明人： David J. Mifsud , Sara Safaeian , Daniel P. Grenn
CPC分类号： H01H47/22 , G01R31/327 , H01H33/00 , H01H47/001 , H01H47/004 , H01H50/54 , H02J7/0031
摘要： A method of controlling positive and negative contactors in a high voltage electrical system includes sensing current flowing through each contactor prior to opening of the contactor and/or after closing of the contactor. A negative contactor weighted value is computed based at least partially on the sensed current flowing through the negative contactor during opening and/or closing. A positive contactor weighted value is computed based at least partially on the sensed current flowing through the positive contactor during opening and/or closing. The order of opening and/or closing of the contactors is determined utilizing at least one of the negative contactor weighted value and the positive contactor weighted value.
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公开(公告)号：US10315531B2
公开(公告)日：2019-06-11
申请号：US15284033
申请日：2016-10-03
摘要： An electrical system for a vehicle includes a high-voltage DC power source electrically connected to a high-voltage bus, a first controller disposed to control electric power flow between the high-voltage bus and a first actuator, and a second controller disposed to control electric power flow between the high-voltage bus and a second actuator. A communication link is disposed to effect communication between the first controller and the second controller. An inertial sensor communicates with the second controller. The second controller includes an instruction set to monitor and determine a request to discharge the high-voltage bus based upon communication from the sensor. Upon determining that the first controller is incapable of discharging the high-voltage bus, the second actuator is controlled to discharge the high-voltage bus.
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公开(公告)号：US20180093574A1
公开(公告)日：2018-04-05
申请号：US15284033
申请日：2016-10-03
CPC分类号： B60L11/08 , B60K1/04 , B60L1/00 , B60L3/0023 , B60L11/1809 , B60R16/02 , H02M7/44 , Y02T90/16
摘要： An electrical system for a vehicle includes a high-voltage DC power source electrically connected to a high-voltage bus, a first controller disposed to control electric power flow between the high-voltage bus and a first actuator, and a second controller disposed to control electric power flow between the high-voltage bus and a second actuator. A communication link is disposed to effect communication between the first controller and the second controller. An inertial sensor communicates with the second controller. The second controller includes an instruction set to monitor and determine a request to discharge the high-voltage bus based upon communication from the sensor. Upon determining that the first controller is incapable of discharging the high-voltage bus, the second actuator is controlled to discharge the high-voltage bus.
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公开(公告)号：US10090125B2
公开(公告)日：2018-10-02
申请号：US15139719
申请日：2016-04-27
发明人： David J. Mifsud , Sara Safaeian , Daniel P. Grenn
IPC分类号： H01H47/22 , H01H50/54 , H02J7/00 , G01R31/327 , H01H33/00
摘要： A method of controlling positive and negative contactors in a high voltage electrical system includes sensing current flowing through each contactor prior to opening of the contactor and/or after closing of the contactor. A negative contactor weighted value is computed based at least partially on the sensed current flowing through the negative contactor during opening and/or closing. A positive contactor weighted value is computed based at least partially on the sensed current flowing through the positive contactor during opening and/or closing. The order of opening and/or closing of the contactors is determined utilizing at least one of the negative contactor weighted value and the positive contactor weighted value.
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公开(公告)号：US20180105059A1
公开(公告)日：2018-04-19
申请号：US15292456
申请日：2016-10-13
CPC分类号： B60L11/1864 , B60L11/1803 , B60L11/1857 , B60L11/1861 , B60L15/025 , B60L15/20 , B60L2240/547 , B60L2240/80 , B60L2260/44 , G01R31/3679 , G01R31/44 , H02J7/0045 , H02J7/0072 , H02J7/345 , H02P21/00 , H02P27/08
摘要： An electrical system includes a voltage bus, battery pack, power inverter module (PIM), electric machine, first contactor, and controller. The PIM is connected to the battery pack and has a capacitor, voltage sensor, and semiconductor switches. The electric machine having phase legs with a corresponding phase winding and resistive path. The first contactor connects the PIM to a positive rail of the bus. The controller opens the first contactor in response to a power-off event, commands a discharge of the capacitor through the resistive paths, diagnoses a state of health (SOH) of the first contactor using a first threshold decay rate of the capacitor output voltage upon opening the first contactor, and executes a control action with respect to the electrical system using the diagnosed SOH. The three possible SOH are unhealthy/hard-welded contactor, unhealthy/soft-welded contactor, and healthy/normally-functioning contactor condition. A vehicle and method are also disclosed.
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公开(公告)号：US20170144554A1
公开(公告)日：2017-05-25
申请号：US14950108
申请日：2015-11-24
发明人： David J. Mifsud , Daniel P. Grenn , Sara Safaeian
CPC分类号： B60L11/18 , B60L3/0046 , B60L3/0069 , B60L3/04 , B60L3/12 , B60L2240/80 , B60L2250/10 , B60L2270/20 , G05B15/02 , H01H47/002 , H01H47/02 , H01H47/18
摘要： Methods of controlling a contactor in a high voltage electrical circuit of a vehicle include delaying a contactor opening if a valid open command is not received, inhibiting closing of a contactor if a low voltage circuit voltage is not sufficient to close the contactor, and determining a fault in the opening of a contactor based on voltages sensed on the contacts of the contactor.
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公开(公告)号：US10179566B2
公开(公告)日：2019-01-15
申请号：US15181972
申请日：2016-06-14
发明人： Andrew J. Namou , David J. Mifsud
摘要： An electrical system includes a contactor having a pair of contacts and a coil configured to electrically close and open the contacts. The electrical system also includes a high voltage (“HV”) circuit including a power supply electrically connected to at least one of the contacts of the contactor. The electrical system further includes a low voltage (“LV”) circuit electrically connected to the coil and configured to selectively energize the coil of the contactor. A disconnect mechanism is coupled with the LV electrical circuit and operable to electrically open the LV electrical circuit to actuate electrical opening of the contacts of the contactor.
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公开(公告)号：US10106042B2
公开(公告)日：2018-10-23
申请号：US14950108
申请日：2015-11-24
发明人： David J. Mifsud , Daniel P. Grenn , Sara Safaeian
摘要： Methods of controlling a contactor in a high voltage electrical circuit of a vehicle include delaying a contactor opening if a valid open command is not received, inhibiting closing of a contactor if a low voltage circuit voltage is not sufficient to close the contactor, and determining a fault in the opening of a contactor based on voltages sensed on the contacts of the contactor.
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