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公开(公告)号：US20230053309A1
公开(公告)日：2023-02-16
申请号：US17399616
申请日：2021-08-11
发明人： Chengzhe LI
摘要： A torque map generation system includes a motor, an inverter that drives the motor, a controller that controls the inverter, a torque sensor coupled to the motor, a power analyzer coupled to the torque sensor and a torque map generator that measures a current vector value of the motor by switching a MTPA (Maximum Torque Per Ampere) method and a square wave method based on a voltage utilization ratio of the inverter, wherein the torque map generator utilizes a measurement result by the MTPA method when the torque map generator uses the square wave method.
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公开(公告)号：US20230051472A1
公开(公告)日：2023-02-16
申请号：US17398463
申请日：2021-08-10
IPC分类号： B60L15/20 , G06F17/18 , G05B19/042 , B60L3/12
摘要： Examples described herein provide a computer-implemented method that includes calculating, by a processing device, a motor acceleration error based at least in part on a motor torque and a motor speed. The method further includes calculating, by the processing device, a regression fit line based at least in part on the motor acceleration error. The method further includes identifying, by the processing device, a zero point using the regression fit line. The method further includes comparing, by the processing device, the zero point to a datum reference to determine a difference. The method further includes integrating, by the processing device, the difference to determine the lash angle. The method further includes controlling, by the processing device, the motor based at least in part on the lash angle.
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公开(公告)号：US20230039095A1
公开(公告)日：2023-02-09
申请号：US17787492
申请日：2020-11-09
发明人： Laurent LABISTE
摘要： Device for determining the angular position of a rotor of a rotary electric machine on the basis of signals delivered by a plurality of position sensors, including a circuit producing a control loop for estimating position of the rotor, delivering at output a signal representative of the position, and a circuit for dynamic normalization by the amplitude of the first harmonic of each signal originating from a position sensor. The circuit receives as input each signal originating from a position sensor, and at least one image of the signal representative of the position of the rotor and is configured to demodulate each signal by the image of the signal, determine, at the end of this demodulation, amplitude of the first harmonic of this signal originating from a position sensor, and normalize each signal by dividing it by the amplitude of the first harmonic of the previously determined signal.
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公开(公告)号：US11571972B2
公开(公告)日：2023-02-07
申请号：US16770997
申请日：2018-12-12
发明人： Jan Lindqvist
摘要： A method and associated system for determining a maintenance status for a pantograph arranged on a vehicle and/or a contact wire intended to be in electrical contact with the pantograph. Monitoring at least longitudinal, vertical or lateral accelerations of the pantograph. Detecting an acceleration pattern based on the monitored accelerations of the pantograph. Determining accelerations in a direction above a predetermined value in the detected acceleration pattern. Determining a maintenance status for the pantograph and/or the contact wire based on the detected acceleration pattern, and wherein the maintenance status indicates a level of wear on the pantograph and/or the contact wire.
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35.发明申请公开(公告)号：US20230021252A1
公开(公告)日：2023-01-19
申请号：US17892965
申请日：2022-08-22
发明人： Robert J. Scaringe
摘要： Methods and systems for monitoring and optimizing utilization of batteries for electric vehicles are described. Data of battery usage of electric vehicles are monitored using battery monitoring sensors at the electric vehicles for a plurality of users who share use of electric vehicles. Battery usage metrics are determined for the batteries of the electric vehicles based on the data of battery usage and determining user impact metrics based on measured quantities relating to driving of the electric vehicles for the plurality of users, the user impact metrics being indicative of degrees of driving severity placed on the vehicles associated with use habits of particular users. The battery usage metrics and the user impact metrics for the plurality of users are analyzed at a computer processing system to determine a particular user to assign to a particular electric vehicle in a given time period to counteract battery degradation of the battery in a particular electric vehicle, and a particular user is paired with the particular electric vehicle.
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公开(公告)号：US20230013475A1
公开(公告)日：2023-01-19
申请号：US17951202
申请日：2022-09-23
申请人： TAIGA MOTORS INC.
发明人： Gabriel BERNATCHEZ
摘要： Methods and systems for activating electric vehicles are provided. One method includes, in response to a first command to activate the vehicle, transitioning the vehicle from an inactive state to a wake state where a controller of the vehicle is activated and the vehicle is prevented from being propelled by an electric motor of the vehicle. The method also includes, in response to receiving a second command to activate the vehicle after receiving the first command, transitioning the vehicle from the wake state to a ready state where the vehicle is permitted to be propelled by the electric motor.
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公开(公告)号：US20220392281A1
公开(公告)日：2022-12-08
申请号：US17752933
申请日：2022-05-25
摘要： A motor vehicle, in particular an at least partly electrically driven motor vehicle, has a battery device with at least one battery cell. The battery device is arranged in a floor region of the motor vehicle and has a protective device for protecting the battery device from mechanical action. The protective device has a protective plate, which is arranged in such a way that it covers the battery device at least in some regions, so that any mechanical actions are absorbed by the protective plate. The protective device also has an acoustic monitoring device, which monitors the protective plate acoustically and with which a signal can be output when a noise characteristic of a mechanical impairment of the protective plate is registered. Also disclosed is a method for monitoring the protective device.
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公开(公告)号：US20220365139A1
公开(公告)日：2022-11-17
申请号：US17597315
申请日：2020-07-03
发明人： Faisal ALTAF
IPC分类号： G01R31/367 , G01R31/389 , B60L3/12
摘要： A method for estimating an operating parameter of a battery unit (202) in an energy storage system (200) of a vehicle (201) using a set of first estimators, each first estimator being configured to estimate a state residual size of the battery unit based on a given initial value of said operating parameter and using a prediction model, the operating parameter being indicative of one of capacity and impedance of the battery unit, the method comprising:—obtaining measurement data relating to operating conditions of the energy storage system at a number of points in time tk,—providing a set of initial values of said operating parameter, each initial value being associated with one of said first estimators,—using the set of first estimators, estimating (103) a set of state residual sizes of the battery unit at each point in time tk based on at least the measurement data and on the associated initial values,—determining a first operating parameter estimate of the battery unit based on the estimated set of state residual sizes,—estimating the operating parameter of the battery unit as a function of time based on at least said first operating parameter estimate, wherein estimating the set of state residual sizes comprises using a recursive algorithm for estimating the state residual size of each element of a set of state residuals, each estimated state residual size being determined based on the state residual size as estimated at a previous point in time tk−1 and a current magnitude of the state residual.
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公开(公告)号：US20220357386A1
公开(公告)日：2022-11-10
申请号：US17737252
申请日：2022-05-05
申请人： MERSEN USA EP CORP.
发明人： Roy A. Ball
摘要： A device and method for detecting a location of an arc event between a power bus and a coupler of an electric vehicle monitors an interface between the power bus and the coupler for the occurrence of an optical event. A determination is made if an arc event occurred based on the optical event, and upon determining the occurrence of an arc event at least one of a time the arc event occurred or a position of the electric vehicle at the time the arc event occurred is recorded.
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公开(公告)号：US11420532B2
公开(公告)日：2022-08-23
申请号：US15349205
申请日：2016-11-11
发明人： Robert J. Scaringe
IPC分类号： B60L58/16 , G06Q20/08 , B60L3/12 , B60L58/18 , G07C5/00 , G07C5/02 , H02J7/00 , B60L58/12 , B60L53/65
摘要： Methods and systems for monitoring and optimizing utilization of batteries for electric vehicles are described. Data of battery usage of electric vehicles are monitored using battery monitoring sensors at the electric vehicles for a plurality of users who share use of electric vehicles. Battery usage metrics are determined for the batteries of the electric vehicles based on the data of battery usage and determining user impact metrics based on measured quantities relating to driving of the electric vehicles for the plurality of users, the user impact metrics being indicative of degrees of driving severity placed on the vehicles associated with use habits of particular users. The battery usage metrics and the user impact metrics for the plurality of users are analyzed at a computer processing system to determine a particular user to assign to a particular electric vehicle in a given time period to counteract battery degradation of the battery in a particular electric vehicle, and a particular user is paired with the particular electric vehicle.
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