公开(公告)号：US20200086747A1

公开(公告)日：2020-03-19

申请号：US16130071

申请日：2018-09-13

Applicant: Ford Global Technologies, LLC

Inventor： Krishna Prasad Bhat ,  Michael W. Degner ,  Allan Roy Gale ,  Ke Zou ,  Xi Lu

IPC: B60L11/18 ,  H02J7/00

Abstract: An exemplary charging system includes, among other things, a first portable charger that electrically couples to an electrified vehicle to charge a traction battery of the electrified vehicle while a second portable charger is providing electrical energy to charge the traction battery. An exemplary charging method includes, among other things, electrically coupling both a first and a second portable charger to an electrified vehicle to charge a traction battery of the electrified vehicle using electrical energy from both the first and the second portable chargers.

公开(公告)号：US10527653B2

公开(公告)日：2020-01-07

申请号：US15474489

申请日：2017-03-30

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Richard William Kautz ,  Xi Lu ,  Zhuxian Xu ,  Guangyin Lei ,  Chingchi Chen ,  Lan Yu ,  Michael W. Degner

IPC: G01R15/14 ,  G01R19/00

Abstract: A method includes measuring an impedance of a shunt as a function of frequency and converting the impedance to an admittance in a time domain. The method further includes connecting the shunt in a circuit and measuring voltage data across the shunt over a predetermined interval. The method includes outputting a signal indicative of a current through the shunt derived from the voltage data convolved with the admittance. The method may be implemented in a controller configured to interface with the shunt.

公开(公告)号：US10352968B2

公开(公告)日：2019-07-16

申请号：US15471214

申请日：2017-03-28

Applicant: Ford Global Technologies, LLC

Inventor： Chingchi Chen ,  Xi Lu ,  Guangyin Lei ,  Zhuxian Xu

IPC: G01R15/14

Abstract: A shunt includes a power terminal having a planar first potential region (FPR) connected to a second potential region (SPR) through a resistive element, the SPR being offset from and parallel to the FPR. The shunt includes a sensor terminal having a first potential lead (FPL) connected to the FPR, and a second potential lead (SPL) connected to the SPR and separated from the FPL by an insulation sheet. The SPL and sheet cover the resistive element.

公开(公告)号：US10122357B2

公开(公告)日：2018-11-06

申请号：US15350278

申请日：2016-11-14

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Xi Lu ,  Chingchi Chen ,  Michael W. Degner ,  Zhuxian Xu ,  Ke Zou

IPC: H03K17/14 ,  H03K17/567 ,  H01L25/07 ,  H01L23/00 ,  H02P27/08 ,  B60L11/18

Abstract: An inverter for an electric vehicle drive has a bridge including a plurality of power switching devices having respective insulated gate terminals and emitter terminals. A PWM circuit determines switching commands for controlling the bridge. A plurality of gate drivers receive the switching commands and provide gate drive signals to respective gate terminals. A plurality of gate capacitors are each thermally coupled to a respective switching device and are electrically connected between the respective gate and emitter terminals. Each gate capacitor has a negative temperature coefficient adapted to counter changes in a switching speed of the switching devices over a predetermined range of temperature. As a result, a consistent switching speed is maintained so that power loss and switching device reliability are optimal across the full temperature range.

公开(公告)号：US10071652B2

公开(公告)日：2018-09-11

申请号：US15151944

申请日：2016-05-11

Applicant: Ford Global Technologies, LLC

Inventor： Xi Lu ,  Chingchi Chen ,  Zhuxian Xu ,  Ke Zou

IPC: H02P1/00 ,  H03K17/16 ,  B60L15/20 ,  B60L11/18 ,  H03K17/567 ,  H02M7/00 ,  H02P27/08

CPC classification number: B60L15/20 ,  B60L3/003 ,  B60L15/007 ,  B60L15/08 ,  B60L50/51 ,  B60L2210/40 ,  B60L2240/526 ,  B60L2240/527 ,  B60L2240/529 ,  B60L2240/80 ,  H02M7/00 ,  H02P27/08 ,  H03K17/165 ,  H03K17/168 ,  H03K17/567 ,  Y02T10/644 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7241 ,  Y02T10/7258 ,  Y02T10/92

Abstract: A vehicle powertrain includes an electric machine, an inverter including an IGBT having a gate configured to flow current through a phase of the electric machine, and a gate driver. The gate driver is configured to supply power onto the gate via a voltage regulated source, and in response to a collector current of the IGBT exceeding a previous steady state current through the phase, transition to a current regulated source to drive the gate. The gate driver may be configured to delay the transition by a predetermined time that is based on a difference between the previous steady state current and a reverse recovery peak current.

公开(公告)号：US10071634B2

公开(公告)日：2018-09-11

申请号：US15077492

申请日：2016-03-22

Applicant: Ford Global Technologies, LLC

Inventor： Zhuxian Xu ,  Chingchi Chen ,  Xi Lu ,  Ke Zou

IPC: B60L11/02 ,  H02M7/533 ,  B60L11/18 ,  H01L27/06 ,  H01L29/739 ,  H02M3/158 ,  H02M7/5387 ,  H02M1/00

CPC classification number: B60L11/02 ,  B60L50/10 ,  B60L53/24 ,  H01L27/0664 ,  H01L29/7396 ,  H02M3/158 ,  H02M7/533 ,  H02M7/53875 ,  H02M2001/0054 ,  H02M2001/007 ,  Y02B70/1491 ,  Y02T10/7258

Abstract: A vehicle powertrain includes an IGBT that conducts current between a supply and load. The vehicle powertrain also includes a controller that applies voltage to a gate of the IGBT at a first level for a first duration that depends on a capacitance of the gate, and increases the voltage over a second duration based on a rate of change of the current falling below a threshold defined by a supply voltage for the load.

公开(公告)号：US09838002B2

公开(公告)日：2017-12-05

申请号：US15132490

申请日：2016-04-19

Applicant: Ford Global Technologies, LLC

Inventor： Zhuxian Xu ,  Chingchi Chen ,  Xi Lu ,  Ke Zou

IPC: H03K17/284 ,  H02M3/158 ,  H03K17/10 ,  B60L11/18

CPC classification number: H03K17/107 ,  B60L11/1816 ,  H02M1/08 ,  H02M3/158 ,  H02M2001/0045 ,  H02P27/06 ,  H03K17/042 ,  H03K17/166 ,  H03K17/168 ,  H03K17/284 ,  Y02T10/7258

Abstract: A vehicle powertrain includes an IGBT and a gate driver. The IGBT is configured to energize an electric machine. The gate driver is configured to apply an off voltage less than a threshold voltage onto a gate of the IGBT while the IGBT is operating in a saturation mode, and in response to expiration of a delay from a transition from saturation to linear mode, apply a voltage pulse above the off voltage to reduce flyback from the electric machine. The gate driver may be configured to, in response to expiration of a delay from a transition from saturation to linear mode, apply a voltage pulse above the off voltage and below the threshold to reduce flyback from the electric machine.