公开(公告)号：US20210242798A1

公开(公告)日：2021-08-05

申请号：US16778808

申请日：2020-01-31

申请人： FORD GLOBAL TECHNOLOGIES, LLC

发明人： Boris CURUVIJA ,  Baoming GE ,  Fan XU

IPC分类号： H02M7/527 ,  B60L50/10

摘要： An automotive power converter may be controlled by detecting a magnitude of current output by a phase leg of the automotive power converter, selecting a mutual off time for switches of the phase leg according to the magnitude, and generating pulse width modulation signals for the switches having the mutual off time to operate the switches to transfer power between a traction battery and electric machine.

公开(公告)号：US20210218085A1

公开(公告)日：2021-07-15

申请号：US16743441

申请日：2020-01-15

申请人： Ford Global Technologies, LLC

发明人： Baoming GE ,  Lihua CHEN ,  Boris CURUVIJA ,  Fan XU

IPC分类号： H01M10/63 ,  H01M10/48 ,  H01M10/615 ,  H01M10/625 ,  H01M10/6571 ,  B60L50/64 ,  B60L58/27

摘要： A vehicle power system includes a traction battery, an electric machine configured to receive power from the traction battery, switching circuitry connected between the traction battery and electric machine, and including pairs of switches connected in parallel, and a capacitor connected with and between the pairs such that the capacitor shares a common terminal with each of the switches of the pairs, and a controller configured to responsive to a temperature of the traction battery being less than a first threshold, activate the switches of each of the pairs in complementary fashion at a switching frequency corresponding to a resonant frequency defined by a capacitance of the capacitor and an inductance of the traction battery to cause AC current to circulate between the traction battery and switching circuitry to generate heat within the traction battery, and responsive to the temperature exceeding a second threshold, deactivate the switches.

公开(公告)号：US20180167013A1

公开(公告)日：2018-06-14

申请号：US15372654

申请日：2016-12-08

申请人： Ford Global Technologies, LLC

发明人： Fan XU ,  Yan ZHOU ,  Shuitao YANG ,  Mohammed Khorshed ALAM ,  Lihua CHEN

IPC分类号： H02P27/06 ,  H03K17/60 ,  H03K17/687 ,  B60L11/18

CPC分类号： H02P27/06 ,  B60L11/1803 ,  B60L2210/14 ,  H03K17/14 ,  H03K17/60 ,  H03K17/687

摘要： A powertrain includes a first and second switch coupled in parallel to drive an electric machine and a gate driver. The gate driver may be configured to, in response to a transition request while a first temperature of the first switch exceeds a second temperature of the second switch, inject a current onto a gate of the second switch to drive rates of change of current through the first and second switch to the electric machine to a same value.

公开(公告)号：US20170197511A1

公开(公告)日：2017-07-13

申请号：US14994851

申请日：2016-01-13

申请人： Ford Global Technologies, LLC

发明人： Serdar Hakki YONAK ,  Fan XU

IPC分类号： B60L11/18 ,  H02P5/68 ,  H02P27/06

CPC分类号： B60L50/51 ,  B60L15/007 ,  B60L50/16 ,  B60L50/61 ,  B60L2210/40 ,  H02M7/003 ,  H02P5/68 ,  H02P27/06 ,  H05K7/1432 ,  Y02T10/6217 ,  Y02T10/644 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7077 ,  Y02T10/7241

摘要： A power inverter includes an array of stacked cards each having switches arranged to transform direct current from a battery into alternating current (AC). Each of the cards also includes a first terminal attached to some of the switches and configured to pass AC therefrom to a first electric machine, and a second terminal attached to other of the switches and configured to pass AC therefrom to a second electric machine. First and second substrates of the power inverter sandwich the switches and terminals.

公开(公告)号：US20190222118A1

公开(公告)日：2019-07-18

申请号：US15871770

申请日：2018-01-15

申请人： FORD GLOBAL TECHNOLOGIES, LLC

发明人： Fan XU ,  Lihua CHEN ,  Shahram ZAREI

IPC分类号： H02M1/44 ,  H02M7/537 ,  H02M1/088 ,  H05K1/18 ,  H01F27/28

摘要： A power module includes a plurality of switching devices. The switching devices are electrically coupled in parallel and triggered by a common gate signal. The switching devices are further attached to a substrate that includes a first coil and a second coil formed around a common axis to define a common mode choke in a gate path and a Kelvin source/emitter path of each of the switching devices.

公开(公告)号：US20190181766A1

公开(公告)日：2019-06-13

申请号：US15837315

申请日：2017-12-11

申请人： FORD GLOBAL TECHNOLOGIES, LLC

发明人： Baoming GE ,  Lihua CHEN ,  Fan XU ,  Shuitao YANG

IPC分类号： H02M3/335 ,  B60L11/18 ,  H02M1/14

CPC分类号： H02M3/33576 ,  B60L50/51 ,  H02M1/14 ,  H02M3/1584 ,  H02M7/48 ,  H02M2001/007 ,  H02M2003/1586

摘要： A DC-DC voltage converter for an electric vehicle connects between a battery pack and a DC link having upper and lower link capacitors. When a target voltage on the link is less than twice the battery voltage, the capacitors are charged in series from two interleaved switching legs of the converter simultaneously for part of the time, and charged in series from only one of the switching legs for part of the time. When the target voltage is between 2 and 4 times the battery voltage, the upper capacitor is charged alone from both legs for part of the time, the upper capacitor is charged alone from only one of the legs for part of the time, the lower capacitor is charged alone from both legs for part of the time, and the lower capacitor is charged alone from only one of the legs for part of the time.