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公开(公告)号：US11273720B2
公开(公告)日：2022-03-15
申请号：US16587230
申请日：2019-09-30
发明人： Mohamed Elshaer , Chingchi Chen
IPC分类号： B60L53/122 , H02J7/02 , H02M1/42 , H02J50/12 , H02M7/06 , B60L53/22 , B60L53/16 , B60L53/18 , H02M3/335 , H02J7/00
摘要： A charger system and method is disclosed for providing wireless and wired charging. The charger may include a wire-charging circuit operable to receive and process a first electrical energy from a wired power source directly connected to the vehicle. The charger may also include a receiving coil operable to receive a second electrical energy received from a wireless power source external that is not directly connected to the vehicle. The charger may include a resonant circuit having a receiving coil and a DC-DC converter. The receiving coil may provide impedance matching when the charger is receiving the first electrical energy from the wired power source. The receiving coil may also be energized by a wireless power source to receive a second electrical energy. The charger may further include a rectifier circuit operable to charge the battery using the first electrical energy or the second electrical energy.
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公开(公告)号：US10983165B2
公开(公告)日：2021-04-20
申请号：US16029832
申请日：2018-07-09
IPC分类号： G01R31/36 , H01M10/48 , H01M10/42 , G01R31/364 , G01R31/382
摘要： A battery system has a cell, a substrate mounted on the cell, and monitoring circuitry on the substrate and exclusively powered by the cell. The battery system also has a switch on the substrate electrically between the cell and monitoring circuit, and control circuitry on the substrate. The control circuitry, responsive to a value of a parameter of the cell measured by the monitoring circuitry falling outside a predefined range, opens the switch to electrically disconnect the monitoring circuit from the cell.
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公开(公告)号：US10919401B2
公开(公告)日：2021-02-16
申请号：US15404853
申请日：2017-01-12
IPC分类号： H02J7/02 , H02J50/12 , B60L53/122 , B60L11/18 , B60L53/66
摘要： A charging system includes an inverter configured to receive rectified mains line voltage and current to power a primary coil to induce charge current in a secondary coil of a vehicle. The charging system also includes a controller configured to alter a switching frequency of the inverter based on charge voltage data from the vehicle to cause the inverter to operate to drive a voltage of an energy storage capacitor of a battery charger of the vehicle toward a constant value.
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公开(公告)号：US20200321959A1
公开(公告)日：2020-10-08
申请号：US16908333
申请日：2020-06-22
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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公开(公告)号：US10705118B2
公开(公告)日：2020-07-07
申请号：US15467920
申请日：2017-03-23
发明人： Xi Lu , Krishna Prasad Bhat , Chingchi Chen , Zhuxian Xu , Guangyin Lei
摘要： A testing apparatus includes a holster including a jack defining a conductive periphery configured to connect with a reference lead of the voltage probe to form a common ground. The apparatus includes a shunt defining first and second regions of different potential having predetermined difference. The second region is configured to connect with a reference lead of the shunt probe. The apparatus includes a bridge configured to connect the shunt probe lead with the common ground.
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96.发明申请公开(公告)号：US20200014075A1
公开(公告)日：2020-01-09
申请号：US16029803
申请日：2018-07-09
摘要： A battery system has a cell and a substrate mounted on the cell. The substrate includes circuitry defining a processor that generates data about the cell, an antenna, a power line communication (PLC) interface, and a coupler that selectively directs signals from the processor containing the data to each of the antenna and PLC interface.
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公开(公告)号：US10439485B2
公开(公告)日：2019-10-08
申请号：US15873198
申请日：2018-01-17
发明人： Zhuxian Xu , Chingchi Chen
IPC分类号： H02M1/088 , B60L50/51 , H03K17/00 , H02M7/5387 , H02M1/00
摘要： An electrified vehicle propulsion system uses current feedback to modify gate drive signals to suppress voltage spikes and increase switching efficiency. A DC link having a link capacitor and a link inductance is connected to first and second converters. A first converter bridge has a first phase leg with first upper and lower switching devices, each switching device having a respective gate loop. A second converter bridge has a second phase leg with second upper and lower switching devices, each switching device having a respective gate loop. A plurality of gate drivers provide gate drive signals to respective gate loops for turning the respective switching devices on and off. A plurality of gate coils are provided, wherein each gate coil is connected in series between a respective gate driver and a respective gate loop. Each gate coil is respectively inductively coupled to the link inductance.
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公开(公告)号：US20190280686A1
公开(公告)日：2019-09-12
申请号：US15917476
申请日：2018-03-09
发明人： Xi Lu , Chingchi Chen
IPC分类号： H03K17/082 , H03K5/24
摘要： Circuitry includes a pair of switches arranged in series, and a gate driver. The gate driver, responsive to a magnitude of current through one of the switches exceeding a threshold, discharges a gate of the one through a first resistor. The gate driver also, responsive to a voltage across a parasitic inductance of the switch becoming zero, discharges the gate through a second resistor but not the first resistor.
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公开(公告)号：US10388460B2
公开(公告)日：2019-08-20
申请号：US15161668
申请日：2016-05-23
发明人： Guangyin Lei , Xi Lu , Zhuxian Xu , Chingchi Chen
摘要： A capacitor comprising first and second end sprays respectively located at distal ends of a capacitor cell, a positive polarity bus bar extending from a first wound conductive layer of the capacitor cell adjacent to the first end spray, a negative polarity bus bar extending from a second wound conductive layer of the capacitor cell adjacent to the second end spray, and a capacitor film wrapped around an area between the first and second conductive layers.
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公开(公告)号：US10369891B2
公开(公告)日：2019-08-06
申请号：US15437256
申请日：2017-02-20
摘要： A vehicle is provided with a coil and a sensor. The coil is adapted to receive power wirelessly in single-phase form from an external coil. The sensor is adapted to measure a characteristic of the power. The vehicle is also provided with a controller that is programmed to estimate a parameter indicative of coil alignment using a three-phase representation of the power based on the characteristic, and to adjust the power received by the coil based on the parameter.
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