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公开(公告)号：US20220032803A1
公开(公告)日：2022-02-03
申请号：US16945123
申请日：2020-07-31
摘要： A charging system of an electrical automobile vehicle includes a converter unit and a first energy storage system of within a first automobile vehicle. A charging cable is releasably connected from the first energy storage system to a charging station or is releasably connected to a second energy storage system of a second automobile vehicle. A vehicle charging controller is connected to the converter unit and programmed to communicate with the charging station and to the second energy storage system. A plurality of low-loss switching devices of the converter unit are selectively operated by signals from the vehicle charging controller to position the plurality of low-loss switching devices in an on-state (ON) or an off-state (OFF) to control charging the first energy storage system from the charging station or charging the second energy storage system from the first energy storage system.
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公开(公告)号：US11233407B2
公开(公告)日：2022-01-25
申请号：US16290602
申请日：2019-03-01
摘要： A battery includes: a first terminal; a second terminal; a plurality of individually housed batteries; a plurality of switches configured to connect ones of the individually housed batteries to and from ones of the first and second terminals; and a switch control module configured to: at a frequency, vary a voltage applied to a gate of one of the switches, the one of the switches configured to connect at least one of the individually housed batteries to one of the first and second terminals; and diagnose whether a fault is present in the one of the switches based on a voltage across the one of the switches.
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23.发明申请公开(公告)号：US20210242691A1
公开(公告)日：2021-08-05
申请号：US16780308
申请日：2020-02-03
发明人： Lei Hao , Yue-Yun Wang , Suresh Gopalakrishnan , Chandra S. Namuduri , Rashmi Prasad , Madhusudan Raghavan
摘要： A system for use with a direct current fast-charging (DCFC) station includes a controller and battery system. The battery system includes first and second battery packs, and first, second, and third switches. The switches have ON/OFF conductive states commanded by the controller to connect the battery packs in a parallel-connected (P-connected) or series-connected (S-connected) configuration. An electric powertrain with one or more electric machines is powered via the battery system. First and second charge ports of the system are connectable to the station via a corresponding charging cable. The first charge port receives a low or high charging voltage from the station. The second charge port receives a low charging voltage. When the station can supply the high charging voltage to the first charge port, the controller establishes the S-connected configuration via the switches, and thereafter charges the battery system solely via the first charge port.
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公开(公告)号：US20210107348A1
公开(公告)日：2021-04-15
申请号：US16597007
申请日：2019-10-09
IPC分类号： B60K6/54 , B60K6/26 , B60K6/383 , B60K6/387 , F16H1/28 , F16H9/02 , H02K7/00 , H02K7/108 , H02K7/116 , H02K11/00 , H02K11/04 , H02K13/00
摘要： A vehicle powertrain includes a first power-source configured to generate a first power-source torque and a multiple speed-ratio transmission configured to transmit the first power-source torque to power the vehicle. The powertrain also includes a fluid coupling having a fluid pump shaft operatively connected to the first power-source and a turbine shaft operatively connected to the multi-speed transmission. The fluid coupling is configured to multiply the first power-source torque, and transfer the multiplied first power-source torque to the multiple speed-ratio transmission. The powertrain additionally includes a second power-source configured to generate a second power-source torque and a first torque transfer system configured to connect the second power-source to the first power-source. The powertrain further includes a second torque transfer system configured to connect the second power-source to the multi-speed transmission. A motor vehicle having such a powertrain is also envisioned.
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25.发明授权公开(公告)号：US10854933B2
公开(公告)日：2020-12-01
申请号：US16251766
申请日：2019-01-18
发明人： Lei Hao , Yue-Yun Wang , Chandra S. Namuduri , Suresh Gopalakrishnan , Thomas W. Nehl , Dongxu Li
IPC分类号： H02J7/00 , H01M10/44 , G01R19/165 , H01M10/42 , H01M10/48
摘要： Presented are battery pack voltage-switching (“V-switch”) systems, methods for making/operating such systems, and multi-pack, electric-drive motor vehicles with battery pack V-switch capabilities. A method for controlling operation of a vehicle includes a vehicle controller receiving a voltage switch signal to change a voltage output of the vehicle's battery system. The vehicle controller determines if a speed of a traction motor is less than a calibrated base speed; if so, the controller transmits a pack isolation signal to a power inverter to electrically disconnect the traction battery packs from the traction motor. The vehicle controller determines if a bus current of a DC bus is less than a calibrated bus current threshold; if so, the controller transmits an open signal to open one or more pack contactor switches and a close signal to close one or more pack contactor switches thereby causing the vehicle battery system to output the second voltage.
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公开(公告)号：US10677212B2
公开(公告)日：2020-06-09
申请号：US15967961
申请日：2018-05-01
发明人： Suresh Gopalakrishnan , Lei Hao , Chandra S. Namuduri , Paul S. Lombardo , Chunhao J. Lee , Alexandru Rajala , Neeraj S. Shidore , Farzad Samie , Norman K. Bucknor , Dongxu Li
IPC分类号： F02N11/08
摘要： A method of controlled stopping an internal combustion engine having a stop-start mode and starter assembly includes detecting when the stop-start mode is active. The method also includes monitoring current rotational speed and position of the engine. The method additionally includes determining when the current rotational position is within a predetermined range of a target stop rotational position and the current rotational speed is less than a threshold rotational speed, and afterward energizing the starter assembly to engage the engine. The method also includes establishing a time delay following energizing the starter assembly to confirm engagement of the starter assembly with the engine. Furthermore, the method includes applying a torque by the starter assembly to stop the engine at the target stop position. A vehicle powertrain employing the engine equipped with the stop-start mode, the starter assembly, and an electronic controller configured to execute the method is also provided.
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公开(公告)号：US20190356257A1
公开(公告)日：2019-11-21
申请号：US15981458
申请日：2018-05-16
IPC分类号： H02P25/086 , F02N11/08 , H02P23/30 , H02P25/092 , H02P25/098
摘要： A multi-phase switched reluctance motor including a rotor and a stator, an electronic commutator subassembly, and a controller. The electronic commutator subassembly includes an electronic motor control unit, a power inverter, and a rotational position sensor, with the power inverter being electrically connected to the stator of the switched reluctance motor. The controller is in communication with the electronic motor control unit, the power inverter, and the rotational position sensor. The controller includes an instruction set that is executable to characterize operation of the switched reluctance motor, dynamically determine inductance of the switched reluctance motor based upon the characterized operation, and execute a closed-loop torque control routine to control the switched reluctance motor based upon the dynamically determined inductance of the switched reluctance motor. The closed-loop torque control routine dynamically determines torque output from the switched reluctance motor based upon the dynamically determined inductance.
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公开(公告)号：US10480674B2
公开(公告)日：2019-11-19
申请号：US15127015
申请日：2015-03-19
摘要： A core structure for an electromagnetic actuator includes an electrically conductive magnetic core component having a magnetic axis, an outer surface between axially opposite ends and at least one slit arranged between said axially opposite ends through the outer surface.
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29.发明申请公开(公告)号：US20190338745A1
公开(公告)日：2019-11-07
申请号：US15967910
申请日：2018-05-01
摘要： An electric starter system is usable with a powertrain having an engine with a flywheel. The starter system includes a brushless starter motor having a machine temperature, and a solenoid operable for translating a pinion gear into meshed engagement with the flywheel and the starter motor in response to a requested engine start event. A controller has temperature regulation logic that includes a proportional-integral torque control loop. Execution of a method embodied by the logic, in response to the requested engine start event when the machine temperature exceeds a first temperature, causes the controller to determine a required starting torque of the starter motor using the control loop. The controller causes the starter motor to transmit the required starting torque to the engine at a level that reduces the machine temperature below the first temperature.
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公开(公告)号：US20190338742A1
公开(公告)日：2019-11-07
申请号：US15967961
申请日：2018-05-01
发明人： Suresh Gopalakrishnan , Lei Hao , Chandra S. Namuduri , Paul S. Lombardo , Chunhao J. Lee , Alexandru Rajala , Neeraj S. Shidore , Farzad Samie , Norman K. Bucknor , Dongxu Li
IPC分类号： F02N11/08
摘要： A method of controlled stopping an internal combustion engine having a stop-start mode and starter assembly includes detecting when the stop-start mode is active. The method also includes monitoring current rotational speed and position of the engine. The method additionally includes determining when the current rotational position is within a predetermined range of a target stop rotational position and the current rotational speed is less than a threshold rotational speed, and afterward energizing the starter assembly to engage the engine. The method also includes establishing a time delay following energizing the starter assembly to confirm engagement of the starter assembly with the engine. Furthermore, the method includes applying a torque by the starter assembly to stop the engine at the target stop position. A vehicle powertrain employing the engine equipped with the stop-start mode, the starter assembly, and an electronic controller configured to execute the method is also provided.
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