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公开(公告)号：US20230093333A1
公开(公告)日：2023-03-23
申请号：US17477670
申请日：2021-09-17
发明人： Lyall Kenneth Winger , Dave Gerard Rich , James Morrison , Suresh Gopalakrishnan , Chandra S. Namuduri
IPC分类号： H01M10/613 , B60L58/26 , H01M50/249 , B60L50/64
摘要： A battery system for a vehicle includes a battery tray having a base wall, a plurality of side walls, and a cover that collectively define a receiving zone. A vent includes an inlet and an outlet exposed to the battery receiving zone. A battery is supported by the base wall. A battery electronic controller (BEC) is arranged in the receiving zone and directly connected to the battery.
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公开(公告)号：US20230070183A1
公开(公告)日：2023-03-09
申请号：US17470757
申请日：2021-09-09
摘要： A system for regulating voltage includes an electronic fuse including a switching component and an active control circuit connected to the switching component, the control circuit configured to open the switching component based on at least an overcurrent condition. The system also includes a voltage regulation component connected to the switching component, the voltage regulation component configured to regulate a voltage across the switching component by applying a voltage to the switching component based on a measured voltage drop across the switching component, and a desired load voltage.
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公开(公告)号：US11482954B2
公开(公告)日：2022-10-25
申请号：US17099915
申请日：2020-11-17
发明人： Lei Hao , Neeraj S. Shidore , Suresh Gopalakrishnan , Chandra S. Namuduri , Venkatesh Gopalakrishnan
IPC分类号： H02P1/00 , H02P6/28 , H02P6/16 , B60L58/27 , B60L53/20 , H01M10/625 , H01M10/6571 , H01M10/66 , H01M10/615
摘要： An apparatus for heating a DC battery in a vehicle including an electric motor. The apparatus comprises an AC generating module coupled to the battery and the electric motor that generates three AC phases. The first, second, and third AC phases are applied to first, second, and third windings of the electric motor, respectively. The first, second, and third AC phases create zero torque in the electric motor because the first AC phase amplitude is equal to the sum of the second and third AC phase amplitudes and the second and third AC phases are 180 degrees out of phase with the first AC phase. The AC generating module creates a heating alternating current in the DC battery.
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公开(公告)号：US20220286064A1
公开(公告)日：2022-09-08
申请号：US17193515
申请日：2021-03-05
IPC分类号： H02M7/53846 , H01L27/07 , H01L29/20 , H01L29/739
摘要： A current source inverter includes a first phase leg including a plurality of switching devices, a second phase leg including a plurality of switching devices, and a third phase leg including a plurality of switching devices. The current source inverter also includes a zero-state phase leg including at least one switching device, wherein the zero-state phase leg is configured to transition from an open state to prevent current flow to a closed state to allow current flow between a positive and negative terminal during a dead-band time.
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公开(公告)号：US11365711B2
公开(公告)日：2022-06-21
申请号：US17085388
申请日：2020-10-30
发明人： Venkatesh Gopalakrishnan , Chandra S. Namuduri , Suresh Gopalakrishnan , Dongxu Li , Chunhao J. Lee , Neeraj S. Shidore , Norman K. Bucknor
摘要： An energy storage system (ESS) for a vehicle propulsion system includes a first battery electrically coupled to a first voltage bus, a second battery electrically coupled to a second voltage bus, and a bidirectional DC/DC power converter electrically coupled to the voltage buses. A starter for cranking an engine is electrically coupled to the first voltage bus. A controller executes computer code stored in memory. The computer code is configured to operate the converter in a boost mode to transfer power from the second voltage bus to the first voltage bus, in response to the controller determining that: a power capability of the first battery is below a power demand on the first voltage bus; a state of charge of the first battery is below a state of charge threshold; or a temperature of the first battery is below a temperature threshold.
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公开(公告)号：US11356006B2
公开(公告)日：2022-06-07
申请号：US16774696
申请日：2020-01-28
发明人： Suresh Gopalakrishnan , Chandra S. Namuduri , Alexandru Rajala , Thomas W. Nehl , Xiaohui Du , Edward L. Kaiser
IPC分类号： H02K24/00 , H02K7/00 , B60L50/60 , B60L53/22 , H02K11/225
摘要： An electric machine includes a machine rotor circumscribed by a machine stator, and having a rotor shaft, rotor stack, and end cap which rotate about an axis. The end cap includes lobes equal in number to a number of pole pairs of the machine rotor. A position sensor assembly has a predetermined alignment with the machine rotor and stator. The sensor assembly includes a sensor rotor formed by the lobes and a sensor stator having a printed circuit board with conductive sine and cosine traces. Machine rotor rotation causes the sensor assembly to output an unmodulated sine and cosine signals to a controller, which then calculates a calibrated reference angle. A magnetic axis of an electrical phase of the machine is aligned with and bisects a peak of the sine trace. A direct axis of the machine rotor aligns with an edge of a lobe.
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公开(公告)号：US20220158574A1
公开(公告)日：2022-05-19
申请号：US17099915
申请日：2020-11-17
发明人： Lei Hao , Neeraj S. Shidore , Suresh Gopalakrishnan , Chandra S. Namuduri , Venkatesh Gopalakrishnan
IPC分类号： H02P6/28 , H02P6/16 , B60L58/27 , B60L53/20 , H01M10/615 , H01M10/625 , H01M10/6571 , H01M10/66
摘要： An apparatus for heating a DC battery in a vehicle including an electric motor. The apparatus comprises an AC generating module coupled to the battery and the electric motor that generates three AC phases. The first, second, and third AC phases are applied to first, second, and third windings of the electric motor, respectively. The first, second, and third AC phases create zero torque in the electric motor because the first AC phase amplitude is equal to the sum of the second and third AC phase amplitudes and the second and third AC phases are 180 degrees out of phase with the first AC phase. The AC generating module creates a heating alternating current in the DC battery.
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公开(公告)号：US11327901B2
公开(公告)日：2022-05-10
申请号：US16290495
申请日：2019-03-01
IPC分类号： G06F12/121 , G06F1/26
摘要： A modular dynamically allocated capacity storage system (MODACS) is provided and includes a housing and a control module. The housing includes source terminals, switches, cells, and sensing module. The source terminals supplying power at a first voltage potential to a first plurality of loads and power at a second voltage potential to a second plurality of loads. The cells are configured to supply power to each of the source terminals based on states of the switches. The sensing modules are configured to determine parameters of each of the cells and generate corresponding status signals. The control module is configured to receive a power request signal, and based on the power request signal and the parameters of each of the cells, determine a connected configuration for the cells relative to each other and the plurality of source terminals and set states of the switches according to the connected configuration.
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公开(公告)号：US20220136475A1
公开(公告)日：2022-05-05
申请号：US17085388
申请日：2020-10-30
发明人： Venkatesh Gopalakrishnan , Chandra S. Namuduri , Suresh Gopalakrishnan , Dongxu Li , Chunhao J. Lee , Neeraj S. Shidore , Norman K. Bucknor
摘要： An energy storage system (ESS) for a vehicle propulsion system includes a first battery electrically coupled to a first voltage bus, a second battery electrically coupled to a second voltage bus, and a bidirectional DC/DC power converter electrically coupled to the voltage buses. A starter for cranking an engine is electrically coupled to the first voltage bus. A controller executes computer code stored in memory. The computer code is configured to operate the converter in a boost mode to transfer power from the second voltage bus to the first voltage bus, in response to the controller determining that: a power capability of the first battery is below a power demand on the first voltage bus; a state of charge of the first battery is below a state of charge threshold; or a temperature of the first battery is below a temperature threshold.
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10.发明授权公开(公告)号：US11254223B2
公开(公告)日：2022-02-22
申请号：US16675730
申请日：2019-11-06
摘要： An electric propulsion system includes a battery pack and a DC-DC converter. The converter has a bypass switch and semiconductor switches. A traction power inverter module (“TPIM”) rectifies a DC bus voltage on the voltage bus to produce an AC bus voltage. An electric machine is connected to the TPIM and energized via the AC bus voltage. A controller calculates required output power from the converter based on a requested operating mode, and speed and torque of the electric machine. When the output power exceeds a threshold, the bypass switch closes to bypass the converter. When the output power is less than the threshold, the controller uses a minimum loss voltage from a loss map as a target control voltage of the converter to optimize efficiency of the electric propulsion system.
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