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公开(公告)号：US11876467B1
公开(公告)日：2024-01-16
申请号：US18164067
申请日：2023-02-03
发明人： Kun Zhuge , Baoming Ge , Lihua Chen
摘要： An inverter is electrically connected between a traction battery and a switch bank. The inverter includes a plurality of pairs of series connected power semiconductor devices. Each of the pairs is electrically connected in parallel with the traction battery to define a phase leg, and each of the power semiconductor devices has a body diode in parallel therewith. The inverter also includes a plurality of diodes connected in parallel with the power semiconductor devices such that only one of the power semiconductor devices of each of the pairs has one of the diodes connected in parallel therewith.
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公开(公告)号：US11784574B2
公开(公告)日：2023-10-10
申请号：US17537629
申请日：2021-11-30
发明人： Yantao Song , Baoming Ge , Lihua Chen , Serdar Hakki Yonak
IPC分类号： H02M3/335 , H02M7/219 , H02M7/5387 , H02J7/34 , B60L50/60 , B60R16/033 , B60L53/53 , B60L53/24 , B60L50/40
CPC分类号： H02M3/33573 , B60L50/40 , B60L50/60 , B60L53/24 , B60L53/53 , B60R16/033 , H02J7/342 , H02M3/33576 , H02M7/219 , H02M7/5387 , B60L2210/30 , B60L2210/40 , H02J2207/20
摘要： A power system for a vehicle includes a traction battery having an output voltage, a transformer including a coil, and a power converter including a plurality of capacitors and a plurality of switches arranged such that when a first subset of the switches are ON, two of the capacitors are in parallel, an AC voltage across the coil is in a positive half cycle, and a voltage across each of the two of the capacitors is half the output voltage.
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公开(公告)号：US11134590B2
公开(公告)日：2021-09-28
申请号：US16741096
申请日：2020-01-13
发明人： Fan Wang , Lihua Chen , Serdar Hakki Yonak
摘要： An automotive power module has a plurality of power cards stacked to form an inverter module, and a DC-link capacitor mounted against the inverter module. Each of the power cards includes a top cover having opposite sides. One of the sides has extended therefrom a first matrix of pins. Each of the power cards also includes a plurality of integrated circuits defining transistors of an inverter mounted on the other of the sides, terminals extending from a perimeter of the top cover and in electrical communication with the integrated circuits, and a bottom cover having extended therefrom a second matrix of pins.
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公开(公告)号：US10958204B1
公开(公告)日：2021-03-23
申请号：US16660465
申请日：2019-10-22
发明人： Baoming Ge , Lihua Chen
摘要： A bi-directional variable voltage converter transfers power between a traction battery and an electric machine inverter. The bi-directional variable voltage converter includes a capacitor, two power module phase legs, and an air-gapped transformer with three windings and no more than four terminals. A first of the windings defines a first terminal and a second terminal of the no more than four terminals. The first terminal is directly electrically connected with a positive terminal of the traction battery and the second terminal is directly electrically connected with a positive terminal of the capacitor and a junction between the second and third windings. A second of the windings defines a third terminal of the no more than four terminals directly electrically connected with one of the power module phase legs. A third of the windings defines a fourth terminal of the no more than four terminals directly electrically connected with the other of the power module phase legs.
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公开(公告)号：US10770970B2
公开(公告)日：2020-09-08
申请号：US15619118
申请日：2017-06-09
发明人： Shuitao Yang , Yan Zhou , Lihua Chen , Baoming Ge , Fan Xu , Mohammed Khorshed Alam
摘要： A powertrain for a vehicle may include a variable voltage converter (VVC), and a controller. The VVC may include an inductor, a bus capacitor and a flying capacitor. The controller may be configured to, in response to a power demand signal exceeding a threshold, modulate switches of the VVC such that an inductor current created by a collapsing field of the inductor is directed into the flying capacitor or the bus capacitor such that a bus capacitor voltage exceeds a flying capacitor voltage, and in response to the power demand signal dropping below the threshold, modulate switches such that the flying capacitor and the bus capacitor are coupled in parallel.
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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
发明人： Lihua Chen , Baoming Ge , Fan Wang , Shahram Zarei , Fan Xu , Mohammed Khorshed Alam , Yan Zhou , Shuitao Yang , Petros G. Taskas
摘要： 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：US20200223314A1
公开(公告)日：2020-07-16
申请号：US16246011
申请日：2019-01-11
发明人： Boris Curuvija , Lihua Chen , Baoming Ge , Fan Xu
IPC分类号： B60L3/00 , B60L3/04 , H02J7/00 , G01R31/327
摘要： A controller of a vehicle power system closes a pre-charge contactor and one of a pair of main contactors to electrically connect a battery and inverter such that current flows through a pre-charge resistor. The controller also opens the pair to electrically disconnect the battery and inverter, and closes a switch configured to complete a circuit such that charge acquired by a capacitor of the inverter is dissipated via the pre-charge resistor.
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公开(公告)号：US10715042B2
公开(公告)日：2020-07-14
申请号：US16039715
申请日：2018-07-19
发明人： Baoming Ge , Lihua Chen
摘要： A variable voltage converter transfers charge between a battery and a DC link. A first inductor couples a positive battery node and a first node. A first transistor selectably couples the first node to a negative battery node. A first capacitor has a negative terminal coupled to the negative battery node. A second inductor couples a positive terminal of the first capacitor to a second node. A second capacitor has a positive terminal coupled to the first node. A second transistor selectably couples the second node to a negative terminal of the second capacitor. When the transistors are non-conducting, the second inductor charges the DC link and the first inductor charges the first and second capacitors. When the transistors are conducting, the inductors are energized in parallel by the battery and the first and second capacitors. High voltage gain is obtained at relatively low values for the PWM duty cycle.
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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
发明人： Yan Zhou , Shuitao Yang , Lihua Chen , Fan Xu , Mohammed Khorshed Alam
IPC分类号： B60L11/18 , H03K17/04 , H02M7/537 , B60L53/14 , H02M1/32 , H02M3/158 , H02M7/5387 , H03K17/16 , B60L3/00 , H02M1/00
摘要： 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：US20190084444A1
公开(公告)日：2019-03-21
申请号：US15706267
申请日：2017-09-15
发明人： Baoming Ge , Lihua Chen , Yan Zhou , Shuitao Yang , Fan Xu
摘要： 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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