公开(公告)号：US20170316905A1

公开(公告)日：2017-11-02

申请号：US15139719

申请日：2016-04-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： David J. Mifsud ,  Sara Safaeian ,  Daniel P. Grenn

IPC: H01H47/22 ,  H01H50/54

CPC classification number: H01H47/22 ,  G01R31/327 ,  H01H33/00 ,  H01H47/001 ,  H01H47/004 ,  H01H50/54 ,  H02J7/0031

Abstract: 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.

公开(公告)号：US10106042B2

公开(公告)日：2018-10-23

申请号：US14950108

申请日：2015-11-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： David J. Mifsud ,  Daniel P. Grenn ,  Sara Safaeian

IPC: B60L11/18 ,  G05B15/02 ,  H01H47/02 ,  H01H47/00

Abstract: 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.

公开(公告)号：US10090125B2

公开(公告)日：2018-10-02

申请号：US15139719

申请日：2016-04-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： David J. Mifsud ,  Sara Safaeian ,  Daniel P. Grenn

IPC: H01H47/22 ,  H01H50/54 ,  H02J7/00 ,  G01R31/327 ,  H01H33/00

Abstract: 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.

公开(公告)号：US20170144554A1

公开(公告)日：2017-05-25

申请号：US14950108

申请日：2015-11-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： David J. Mifsud ,  Daniel P. Grenn ,  Sara Safaeian

IPC: B60L11/18 ,  H01H47/00 ,  H01H47/02 ,  G05B15/02

CPC classification number: B60L11/18 ,  B60L3/0046 ,  B60L3/0069 ,  B60L3/04 ,  B60L3/12 ,  B60L2240/80 ,  B60L2250/10 ,  B60L2270/20 ,  G05B15/02 ,  H01H47/002 ,  H01H47/02 ,  H01H47/18

Abstract: 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.