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公开(公告)号：US11850954B2
公开(公告)日：2023-12-26
申请号：US17674922
申请日：2022-02-18
发明人： Xi Lu , Krishna Prasad Bhat , Ke Zou , Chingchi Chen , Michael W. Degner
IPC分类号： B60L50/60 , H02M7/5387 , H02P27/06 , H02M3/158 , B60L1/00
CPC分类号： B60L50/60 , H02M7/5387 , H02P27/06 , B60L1/006 , B60L2210/10 , B60L2210/40 , H02M3/158
摘要： An electrified vehicle and associated inverter configured for powering two different types of external loads include first and second phase/line legs combined with a first neutral leg coupled to a vehicle chassis, and a second floating neutral leg that is not coupled to the vehicle chassis. The first/second phase legs and first neutral leg are coupled to a first receptacle configured to receive a corresponding plug to power a first load, such as a power tool or accessory. The first/second phase legs and the second neutral leg are coupled to a second receptacle configured to receive a corresponding plug to power a second load, such as a home or building having an earth grounding electrode. The inverter may include an isolation transformer between the loads and the traction battery, and/or may be configured to provide single phase, split-phase, or three-phase power for either or both of the neutral connections.
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公开(公告)号：US11581583B2
公开(公告)日：2023-02-14
申请号：US16029791
申请日：2018-07-09
摘要： A battery system has a battery cell including a can, and a ceramic substrate, including a patterned metallized surface, mounted to the can via a thermally conductive adhesive. The battery system also has a monolithic integrated circuit that measures and transmits data about the cell mounted to the patterned metallized surface such that the ceramic substrate and monolithic integrated circuit are electrically isolated from one another.
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公开(公告)号：US20210313906A1
公开(公告)日：2021-10-07
申请号：US17352514
申请日：2021-06-21
发明人： Zhuxian Xu , Chingchi Chen
IPC分类号： H02M7/5387 , H02M1/08 , H02P27/08
摘要： Current imbalances between parallel switching devices in a power converter half leg are reduced. A gate driver generates a nominal PWM gate drive signal for a respective half leg. A first feedback loop couples the nominal PWM gate drive signal to a gate terminal of a respective first switching device. The first feedback loop has a first mutual inductance with a current path of a first parallel switching device and has a second mutual inductance with a current path of a second parallel switching device. The first and second mutual inductances are arranged to generate opposing voltages in the first feedback loop, so that when all the parallel switching devices carry equal current then the voltages cancel.
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公开(公告)号：US11108371B2
公开(公告)日：2021-08-31
申请号：US16687402
申请日：2019-11-18
摘要： A power system includes a traction battery, and a rectifier including a pair of diodes, a pair of switches, and a pair of capacitors each in parallel with a different one of the switches such that alternating current input to the rectifier results in alternating voltage having parabolic approaches to maximum magnitude values being input to the rectifier. The maximum magnitude values correspond to a magnitude of voltage output to the traction battery.
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公开(公告)号：US20200153362A1
公开(公告)日：2020-05-14
申请号：US16186973
申请日：2018-11-12
发明人： Zhuxian Xu , Chingchi Chen
IPC分类号： H02M7/5387 , H03K17/16 , H02M1/084
摘要： A multiphase inverter for an electric vehicle drive has a plurality of drivers to provide drive signals to respective gate loops of upper and lower transistors in the phase legs. A transformer has a secondary winding in a first gate loop of a first transistor in one phase leg and a primary winding connecting a Kelvin-emitter of the first transistor to a Kelvin-emitter of a second transistor in the other phase leg. Switching transients of transistors are shortened because when gate signal is toggled to change a conduction state of a transistor in a first phase leg, a rate of current change in the first leg is sensed in a transformer primary winding connected across a stray inductance of the first leg. A voltage proportional to the sensed rate is added to the gate signal via a transformer secondary winding, thereby increasing a common source inductance of the transistor.
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公开(公告)号：US20200014077A1
公开(公告)日：2020-01-09
申请号：US16029865
申请日：2018-07-09
摘要： A battery system includes a cell, and an integrated circuit and flexible circuitry on and electrically isolated from a container of the cell. The flexible circuitry is arranged with the cell and integrated circuit to form a dipole antenna that wirelessly transmits signals from the integrated circuit.
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公开(公告)号：US10527653B2
公开(公告)日：2020-01-07
申请号：US15474489
申请日：2017-03-30
发明人： Richard William Kautz , Xi Lu , Zhuxian Xu , Guangyin Lei , Chingchi Chen , Lan Yu , Michael W. Degner
摘要： 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.
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公开(公告)号：US10513185B2
公开(公告)日：2019-12-24
申请号：US15847993
申请日：2017-12-20
发明人： Mohamed Elshaer , Allan Roy Gale , Chingchi Chen
摘要： An electrified vehicle charger includes a diode bridge, contactors, and a controller. The diode bridge may be configured to rectify an alternating current (AC) source. The contactors may couple the AC source with a traction battery. The controller may be configured to, responsive to a magnitude of a potential across a diode of the bridge, corresponding to a neutral crossing of a potential of the AC source, exceeding a threshold, open the contactors.
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公开(公告)号：US10427532B2
公开(公告)日：2019-10-01
申请号：US15479687
申请日：2017-04-05
摘要： A vehicle includes a traction battery, an on-board charging system (OBCS), and a wireless power transfer system (WPTS). Each of the OBCS and WPTS is configured to selectively use a same rectifier such that the rectifier rectifies output of the OBCS and rectifies output of the WPTS to provide power to the traction battery.
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公开(公告)号：US20190229721A1
公开(公告)日：2019-07-25
申请号：US16256304
申请日：2019-01-24
发明人： Krishna Prasad Bhat , Chingchi Chen
摘要： Embodiments include a power conversion circuit comprising first and second semiconductor switches, and a drive circuit configured to create a period of operational overlap for the first and second switches by setting a gate voltage of the first switch to an intermediate value above a threshold voltage of the first switch, during turn-on and turn-off operations of the second switch. Embodiments also include a method of operating first and second semiconductor devices, comprising: reducing a gate voltage of the first device to an intermediate value above a threshold voltage while the second device is off; turning off the first device after the second device is on; increasing the gate voltage of the first device to the intermediate value while the second device is on; and fully turning on the first device after the second device is off.
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