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公开(公告)号：US10757843B2
公开(公告)日：2020-08-25
申请号：US15870181
申请日：2018-01-12
Applicant: Ford Global Technologies, LLC
Inventor： Lihua Chen , Baoming Ge , Fan Wang , Shahram Zarei , Fan Xu , Mohammed Khorshed Alam , Yan Zhou , Shuitao Yang , Petros G. Taskas
Abstract: A vehicular system includes a pump, configured to circulate coolant for a traction inverter, and a controller. The controller may be configured to, responsive to each of a temperature of the traction inverter falling outside a first range or a requested flow rate of the pump falling outside a second range, operate the pump at a predefined speed, otherwise, operate the pump at a speed based on a difference between the temperature and a temperature associated with the coolant.
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公开(公告)号：US10525841B2
公开(公告)日：2020-01-07
申请号：US15291312
申请日：2016-10-12
Applicant: Ford Global Technologies, LLC
Inventor： Yan Zhou , Shuitao Yang , Lihua Chen , Fan Xu , Mohammed Khorshed Alam
IPC: B60L11/18 , H03K17/04 , H02M7/537 , B60L53/14 , H02M1/32 , H02M3/158 , H02M7/5387 , H03K17/16 , B60L3/00 , H02M1/00
Abstract: A vehicle includes an electric machine configured to provide propulsive force to the vehicle, and a power inverter configured to supply power from a traction battery to the electric machine using a first and second switch configured as a half-bridge, wherein the first switch is controlled by a gate driver. The gate driver is configured to operate in a soft turn-off mode when a load current exceeds a threshold for a time period defined by a mask timer, operate in a fast turn-off mode when the load current is below the threshold, and in response to a turn-off request received prior to expiration of the mask timer after the load current exceeds the threshold, enable the soft turn-off mode.
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公开(公告)号：US10457150B2
公开(公告)日：2019-10-29
申请号：US15617592
申请日：2017-06-08
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Hadi Malek , Shuitao Yang , Yan Zhou
Abstract: A power conversion system includes a power converter having output terminals that are electrically isolated from input terminals. The power conversion system further includes a circuit configured to couple a voltage input from a power source to the input terminals, and provide an output voltage to a load that is a series combination of the voltage input and a voltage across the output terminals.
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公开(公告)号：US20190084444A1
公开(公告)日：2019-03-21
申请号：US15706267
申请日：2017-09-15
Applicant: Ford Global Technologies, LLC
Inventor： Baoming Ge , Lihua Chen , Yan Zhou , Shuitao Yang , Fan Xu
Abstract: A powertrain for a vehicle includes a Y-wound generator, a Y-wound motor, a generator inverter, a motor inverter, and a traction battery. The Y-wound generator and Y-wound motor are coupled via each respective neutral terminal. The generator inverter is coupled between the Y-wound generator and a generator bus and the motor inverter is coupled between the Y-wound motor and a motor bus. The traction battery has a first terminal coupled to each neutral terminal and a second terminal coupled to bus terminals of the generator and motor bus.
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公开(公告)号：US20190044429A1
公开(公告)日：2019-02-07
申请号：US15669334
申请日：2017-08-04
Applicant: Ford Global Technologies, LLC
Inventor： Shuitao Yang , Yan Zhou , Baoming Ge , Lihua Chen , Fan Xu , Mohammed Khorshed Alam
IPC: H02M1/32 , B60R16/033 , H02M7/5395 , H02P27/08
Abstract: A vehicle includes an inverter having a supply bus including a contactor operable to conduct current through a resistive element connected to a capacitive element having a voltage supplied by a battery. The vehicle includes a controller configured to energize a first gate of the inverter. The energization is responsive to the voltage exceeding a threshold. The controller is configured to detect current flow between a first phase associated with the gate and the bus based on a voltage drop associated with the voltage.
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Patent Agency Ranking
公开(公告)号：US20180287601A1
公开(公告)日：2018-10-04
申请号：US15472422
申请日：2017-03-29
Applicant: Ford Global Technologies, LLC
Inventor： Shuitao Yang , Yan Zhou , Lihua Chen , Fan Xu
IPC: H03K17/041 , H02J50/12 , H02J7/02 , H02J7/00 , H03K17/04 , H02M1/088 , B60L11/14 , B60L11/18 , B60L1/00
Abstract: A gate driver of a power device includes an inductor and a supply. The inductor is configured to, during a transitional period of the power device, convert a potential on a gate to a field, and the field to an opposite potential to toggle the gate and charge a floating capacitor to the opposite potential as an excess field collapses. The supply is configured to maintain the gate at the potential and generate the excess field during a non-transitional period.
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公开(公告)号：US20180215269A1
公开(公告)日：2018-08-02
申请号：US15420164
申请日：2017-01-31
Applicant: Ford Global Technologies, LLC
Inventor： Mohammed Khorshed Alam , Yan Zhou , Shuitao Yang , Fan Xu , Lihua Chen
CPC classification number: B60L3/003 , B60L1/003 , B60L11/02 , B60L11/1811 , B60L11/1814 , B60L11/1816 , B60L15/007 , B60L15/20 , B60L2210/10 , B60L2210/30 , B60L2210/40 , H02M3/04 , H02M7/44 , H02P27/06 , H02P2201/09 , Y02T10/644 , Y02T10/7005 , Y02T10/7241 , Y10S903/904
Abstract: A vehicle powertrain includes a variable voltage converter, a bypass diode and a controller. The bypass diode may be coupled in parallel with the converter and configured to clamp an output of the converter to a battery voltage. The controller may be configured to, while in a boost mode and in response to a rate of change of a converter inductor current exceeding a boost threshold, open switches of the converter to divert propulsive energy through the bypass diode. The controller may also be configured to, while in buck mode and in response to a magnitude of a converter inductor current exceeding a buck threshold, open switches of the converter to divert regenerative energy through the bypass diode, while reversed biased, to the battery.
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公开(公告)号：US10967743B2
公开(公告)日：2021-04-06
申请号：US15437714
申请日：2017-02-21
Applicant: Ford Global Technologies, LLC
Inventor： Baoming Ge , Lihua Chen , Yan Zhou , Shuitao Yang , Fan Xu
Abstract: A powertrain for a vehicle includes an electric machine coupled with a first inverter, a traction battery and a second inverter. The traction battery is coupled between a neutral terminal of the electric machine and a negative terminal of the first inverter. The second inverter is coupled in parallel with the first inverter with respect to a direct current (DC) bus, and configured to drive a second electric machine.
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公开(公告)号：US10576828B2
公开(公告)日：2020-03-03
申请号：US15404393
申请日：2017-01-12
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Jogendra S. Thongam , Shuitao Yang , Mohammed Khorshed Alam , Lihua Chen , Fan Xu , Yan Zhou
Abstract: A variable voltage converter for an electric drive system has upper and lower switching devices in series between positive and negative buses. An inductance couples a junction between the switching devices to a DC battery. A controller is configured to drive the switches according to PWM gate signals based on an expected boost ratio of the converter. The PWM gate signals have a nominal dead-time insertion for both the upper and lower switching devices when the expected boost ratio is greater than a predetermined boost ratio. In order to extend a range of achievable boost ratios during regeneration operation, the PWM gate signals are without dead-time insertion for the upper switching device and the lower switching device remains continuously off when the expected boost ratio is less than the predetermined boost ratio.
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公开(公告)号：US10389352B1
公开(公告)日：2019-08-20
申请号：US15904381
申请日：2018-02-25
Applicant: Ford Global Technologies, LLC
Inventor： Fan Xu , Lihua Chen , Baoming Ge , Yan Zhou , Shuitao Yang
Abstract: A power electronics module is arranged to pass power between a traction battery and electric machine, and includes a pair of parallel power transistors and a differential mode choke arranged to, responsive to current flow through the choke, drive gate voltages of the power transistors apart to reduce differences in current magnitudes output by the transistors.
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