公开(公告)号：US11722129B2

公开(公告)日：2023-08-08

申请号：US17711480

申请日：2022-04-01

Applicant: Ford Global Technologies, LLC

Inventor： Yantao Song ,  Baoming Ge ,  Lihua Chen ,  Serdar Hakki Yonak

IPC: H03K17/082 ,  H02M1/34 ,  H03K17/567 ,  H02M1/00

CPC classification number: H03K17/0822 ,  H02M1/34 ,  H03K17/567 ,  H02M1/0048 ,  H02M1/344

Abstract: An automotive vehicle includes an electric machine, a traction battery, and a power converter. The power converter transfers power between the electric machine and traction battery. The power convert includes a switch that defines a portion of a phase leg, a gate driver circuit that provides provide power to a gate of the switch, and a clamping circuit. The clamping circuit includes a clamping switch that, responsive to the gate driver circuit being de-energized and a voltage of the gate exceeding a predetermined threshold value, conducts current from the gate to dissipate the voltage and clamp the gate to an emitter of the switch.

公开(公告)号：US20230223853A1

公开(公告)日：2023-07-13

申请号：US17570545

申请日：2022-01-07

Applicant: Ford Global Technologies, LLC

Inventor： Yantao Song ,  Baoming Ge ,  Lihua Chen ,  Serdar Hakki Yonak

IPC: H02M3/24 ,  H02J7/34 ,  B60L53/60

CPC classification number: H02M3/24 ,  H02J7/345 ,  B60L53/60 ,  H02J2207/20 ,  B60L2210/10

Abstract: A power system includes a DC/AC converter, a traction battery, an AC/DC converter electrically connected between the DC/AC converter and traction battery, and a transformer electrically connected between the DC/AC converter and AC/DC converter. The AC/DC converter includes a plurality of semiconductor devices and a plurality of capacitors such that during power transfer from the DC/AC converter to the traction battery, a voltage across each of the capacitors is half of a battery voltage.

公开(公告)号：US20230170137A1

公开(公告)日：2023-06-01

申请号：US17537963

申请日：2021-11-30

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Lihua Chen ,  Boris Curuvija ,  Baoming Ge ,  Moon Young Lee ,  Fan Wang ,  Serdar H. Yonak

IPC: H01F27/40

CPC classification number: H01F27/402 ,  H01F27/325

Abstract: A power inductor such as a variable voltage converter power inductor having a temperature sensor embedded therein is disclosed. In one or more embodiments, the sensor may be disposed between the core and the coil or winding. The sensor may be positioned in the cavity of a bobbin or the core itself.

公开(公告)号：US11170928B2

公开(公告)日：2021-11-09

申请号：US16786424

申请日：2020-02-10

Applicant: Ford Global Technologies, LLC

Inventor： Baoming Ge ,  Lihua Chen ,  Serdar Hakki Yonak

IPC: H01F27/24 ,  H01F27/28 ,  H01F27/38 ,  H01F3/14 ,  B60L50/51 ,  H02P27/06 ,  H02M7/537 ,  H02M7/00

Abstract: An automotive power converter includes a pair of series connected switches and an inductor including a core having a leg, a winding wound around the leg, and a terminal center tapping the switches. The leg includes a plurality of alternating frames and solid blocks arranged to define a continuous contact surface for the winding and to define internal cavities within the leg such that each of the frames surrounds one of the internal cavities.

公开(公告)号：US20210234538A1

公开(公告)日：2021-07-29

申请号：US16752241

申请日：2020-01-24

Applicant: Ford Global Technologies, LLC

Inventor： Yantao Song ,  Baoming Ge ,  Lihua Chen ,  Serdar Hakki Yonak

IPC: H03K17/082 ,  H03K17/567 ,  H02M1/34 ,  H02M1/00

Abstract: An automotive vehicle includes an electric machine, a traction battery, and a power converter. The power converter transfers power between the electric machine and traction battery. The power convert includes a switch that defines a portion of a phase leg, a gate driver circuit that provides provide power to a gate of the switch, and a clamping circuit. The clamping circuit includes a clamping switch that, responsive to the gate driver circuit being de-energized and a voltage of the gate exceeding a predetermined threshold value, conducts current from the gate to dissipate the voltage and clamp the gate to an emitter of the switch.

公开(公告)号：US11025159B2

公开(公告)日：2021-06-01

申请号：US16676211

申请日：2019-11-06

Applicant: Ford Global Technologies, LLC

Inventor： Baoming Ge ,  Lihua Chen

IPC: H02M1/38 ,  H02M1/088 ,  H03K17/687 ,  H03K17/60 ,  H02M7/5387

Abstract: An automotive power converter includes positive and negative DC rails, a pair of phase legs each having first and second switches connected in series, an output electrically connected between the first and second switches of each of the phase legs, and control circuitry configured to prevent turn on of the first switches responsive to current through either of the second switches exceeding a predefined threshold.

公开(公告)号：US10778105B2

公开(公告)日：2020-09-15

申请号：US15837315

申请日：2017-12-11

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Baoming Ge ,  Lihua Chen ,  Fan Xu ,  Shuitao Yang

IPC: H02M3/335 ,  H02M1/14 ,  H02M3/158 ,  B60L50/51 ,  H02M7/48 ,  H02M1/00

Abstract: 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.

公开(公告)号：US10773601B2

公开(公告)日：2020-09-15

申请号：US16163736

申请日：2018-10-18

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Boris Curuvija ,  Fan Xu ,  Lihua Chen ,  Baoming Ge

IPC: B60L50/40 ,  B60L3/00 ,  H02M1/32 ,  H02H7/122 ,  H02M7/5387

Abstract: A shared resistor performs precharging and discharging functions of capacitors in an electric vehicle drive system. In a precharge state, the shared resistor is connected between the capacitors and a DC source via a precharge relay. In a discharge state, the resistor is connected across the capacitors via a discharge transistor. Otherwise, the resistor is disconnected. A bypass switch is connected between the resistor and an input capacitor. The bypass switch is rendered conductive during the precharge state and during the discharge state. The discharge transistor is activated only during the discharge state. As a result, the invention uses less components by virtue of eliminating separate resistance elements for pre-charging and discharging and by eliminating discharge switches dedicated to separate resistances. The circuit integration and the placement of components outside the inverter module improves overall system cost and packaging size.

公开(公告)号：US10581363B2

公开(公告)日：2020-03-03

申请号：US16016069

申请日：2018-06-22

Applicant: Ford Global Technologies, LLC

Inventor： Baoming Ge ,  Lihua Chen

IPC: H02P27/08 ,  B60R16/033 ,  H02P9/02

Abstract: A powertrain for a vehicle includes a Y-wound generator and Y-wound motor coupled via respective neutral terminals, a generator inverter coupled between the Y-wound generator and a generator bus, and a motor inverter coupled between the Y-wound motor and a motor bus. The powertrain further includes a traction battery having first and second terminals each selectively coupled to the neutral terminals. The second terminal is further coupled to bus terminals of the generator and motor bus.

公开(公告)号：US10432186B2

公开(公告)日：2019-10-01

申请号：US15812175

申请日：2017-11-14

Applicant: Ford Global Technologies, LLC

Inventor： Shuitao Yang ,  Yan Zhou ,  Lihua Chen ,  Fan Xu ,  Mohammed Khorshed Alam ,  Baoming Ge

IPC: H03K3/012 ,  H03K17/082 ,  H02M7/5395 ,  H02P27/08 ,  B60K6/22 ,  B60R16/00

Abstract: A vehicle powertrain has a power inverter that includes a load switch with a main emitter and a current mirror emitter, a variable resistor coupled between the current mirror emitter and the main emitter, and a controller. The controller may be configured to adjust a gate voltage based on a voltage across the variable resistor, and responsive to the gate voltage exceeding a Miller plateau gate voltage, increase a variable resistor resistance such that feedback increases as the load switch saturates.