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公开(公告)号：US20170257039A1
公开(公告)日：2017-09-07
申请号：US15059971
申请日：2016-03-03
CPC分类号： H02M7/537 , H02M7/53875 , H02M2001/322 , H02P27/06
摘要： A power inverter includes a multi-phase inverter circuit electrically connected to positive and negative conductors of the high-voltage bus. A bi-stable switch is electrically connected in series with a discharge resistor between the positive and negative conductors of the high-voltage bus, and a capacitor is electrically connected between the positive and negative conductors of the high-voltage bus. First and second trigger circuits are in communication with a gate of the bi-stable switch, and first and second contactors are controllable to electrically connect a respective one of the positive and negative conductors of the high-voltage bus to the high-voltage DC power source. The bi-stable switch is controllable to provide a low-impedance electric current flow path through the discharge resistor between the positive and negative conductors of the high-voltage bus in response to an activation signal from one of the first and second high-voltage DC contactor circuits.
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公开(公告)号：US20170214258A1
公开(公告)日：2017-07-27
申请号：US15007688
申请日：2016-01-27
CPC分类号： H02J7/0031 , H02H3/20 , H02H3/207
摘要： A disconnect architecture for use with a system having a battery pack and positive and negative bus rails includes a mid-pack low-power (LP) relay, a fuse, semiconductor switches, and a sequencer circuit. The mid-pack LP relay is positioned between the rails at a mid-stack point of the battery pack, and divides a voltage across the battery pack when commanded open. The fuse is positioned between the mid-pack LP relay and the positive bus rail, and opens in response to a dead short condition of the system. The semiconductor switches are positioned in electrical parallel with the mid-pack LP relay. The sequencer circuit selectively turns on the semiconductor switches and thereby coordinates a flow of electrical current through the semiconductor switches and the mid-pack LP relay in response to a detected partial short condition of the system. A system includes the battery pack, bus rails, and disconnect architecture.
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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：US10283982B2
公开(公告)日：2019-05-07
申请号：US15007688
申请日：2016-01-27
摘要： A disconnect architecture for use with a system having a battery pack and positive and negative bus rails includes a mid-pack low-power (LP) relay, a fuse, semiconductor switches, and a sequencer circuit. The mid-pack LP relay is positioned between the rails at a mid-stack point of the battery pack, and divides a voltage across the battery pack when commanded open. The fuse is positioned between the mid-pack LP relay and the positive bus rail, and opens in response to a dead short condition of the system. The semiconductor switches are positioned in electrical parallel with the mid-pack LP relay. The sequencer circuit selectively turns on the semiconductor switches and thereby coordinates a flow of electrical current through the semiconductor switches and the mid-pack LP relay in response to a detected partial short condition of the system. A system includes the battery pack, bus rails, and disconnect architecture.
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公开(公告)号：US09985453B2
公开(公告)日：2018-05-29
申请号：US15059979
申请日：2016-03-03
CPC分类号： H02J7/0065 , B60L3/00 , B60L15/007 , B60L2240/526 , H02J7/0068 , H02J2007/0067 , H02M1/32 , H02M7/53875 , H02M2001/322
摘要： A power inverter including a multi-phase inverter circuit is electrically connected to a high-voltage DC power source, and includes a capacitor electrically connected between positive and negative conductors of a high-voltage bus. A normally-ON discharge switch is electrically connected in series with a discharge resistor between the positive and negative conductors of the high-voltage bus. The discharge switch includes a control gate, wherein the control gate of the discharge switch is in communication with an ignition switch. The discharge switch is controllable to an open state between the positive and negative conductors of the high-voltage bus when the ignition switch is in an ON state. The discharge switch achieves a closed state to provide a low-impedance electric current flow path through the discharge resistor between the positive and negative conductors of the high-voltage bus when the ignition switch is in an OFF state.
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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：US10020755B2
公开(公告)日：2018-07-10
申请号：US15059971
申请日：2016-03-03
CPC分类号： H02M7/537 , H02M7/53875 , H02M2001/322 , H02P27/06
摘要： A power inverter includes a multi-phase inverter circuit electrically connected to positive and negative conductors of the high-voltage bus. A bi-stable switch is electrically connected in series with a discharge resistor between the positive and negative conductors of the high-voltage bus, and a capacitor is electrically connected between the positive and negative conductors of the high-voltage bus. First and second trigger circuits are in communication with a gate of the bi-stable switch, and first and second contactors are controllable to electrically connect a respective one of the positive and negative conductors of the high-voltage bus to the high-voltage DC power source. The bi-stable switch is controllable to provide a low-impedance electric current flow path through the discharge resistor between the positive and negative conductors of the high-voltage bus in response to an activation signal from one of the first and second high-voltage DC contactor circuits.
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公开(公告)号：US09985452B2
公开(公告)日：2018-05-29
申请号：US15059961
申请日：2016-03-03
IPC分类号： H02J7/00
CPC分类号： H02J7/0065 , B60L11/1809 , H02J7/0029 , H02J7/0068 , H02J7/345 , H02J2007/0067
摘要： A discharge circuit for a high-voltage bus that is electrically connected to a high-voltage DC power source is described. The discharge circuit includes a discharge switch electrically connected in series with a discharge resistor between positive and negative conductors of the high-voltage bus, and the discharge switch includes a gate. A bi-stable switch includes a control gate, an input line that is electrically connected to the high-voltage bus and an output line that is electrically connected to the gate of the discharge switch. A trigger device is in communication with the control gate of the bi-stable switch. The input line of the bi-stable switch is electrically connected to the high-voltage bus, and the discharge switch is controllable to a closed state to provide an electric current flow path through the discharge resistor between the positive and negative conductors of the high-voltage bus in response to an activation signal.
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公开(公告)号：US20170256972A1
公开(公告)日：2017-09-07
申请号：US15059979
申请日：2016-03-03
IPC分类号： H02J7/00
CPC分类号： H02J7/0065 , B60L3/00 , B60L15/007 , B60L2240/526 , H02J7/0068 , H02J2007/0067 , H02M1/32 , H02M7/53875 , H02M2001/322
摘要： A power inverter including a multi-phase inverter circuit is electrically connected to a high-voltage DC power source, and includes a capacitor electrically connected between positive and negative conductors of a high-voltage bus. A normally-ON discharge switch is electrically connected in series with a discharge resistor between the positive and negative conductors of the high-voltage bus. The discharge switch includes a control gate, wherein the control gate of the discharge switch is in communication with an ignition switch. The discharge switch is controllable to an open state between the positive and negative conductors of the high-voltage bus when the ignition switch is in an ON state. The discharge switch achieves a closed state to provide a low-impedance electric current flow path through the discharge resistor between the positive and negative conductors of the high-voltage bus when the ignition switch is in an OFF state.
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公开(公告)号：US20170256971A1
公开(公告)日：2017-09-07
申请号：US15059961
申请日：2016-03-03
IPC分类号： H02J7/00
CPC分类号： H02J7/0065 , B60L11/1809 , H02J7/0029 , H02J7/0068 , H02J7/345 , H02J2007/0067
摘要： A discharge circuit for a high-voltage bus that is electrically connected to a high-voltage DC power source is described. The discharge circuit includes a discharge switch electrically connected in series with a discharge resistor between positive and negative conductors of the high-voltage bus, and the discharge switch includes a gate. A bi-stable switch includes a control gate, an input line that is electrically connected to the high-voltage bus and an output line that is electrically connected to the gate of the discharge switch. A trigger device is in communication with the control gate of the bi-stable switch. The input line of the bi-stable switch is electrically connected to the high-voltage bus, and the discharge switch is controllable to a closed state to provide an electric current flow path through the discharge resistor between the positive and negative conductors of the high-voltage bus in response to an activation signal.
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