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公开(公告)号：US11535097B2
公开(公告)日：2022-12-27
申请号：US16871215
申请日：2020-05-11
申请人： Atieva, Inc.
摘要： An electric motor cooling system is provided that utilizes stator-integrated axial coolant channels and a coolant manifold centrally located within the stator to efficiently remove motor assembly heat. In order to increase the velocity of the coolant exiting the axial coolant channels, thereby improving end winding cooling uniformity, end laminations are integrated into the stator which restrict the flow of coolant from the axial coolant channels.
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公开(公告)号：US11418140B2
公开(公告)日：2022-08-16
申请号：US14194533
申请日：2014-02-28
申请人： Atieva, Inc.
发明人： Yifan Tang
摘要： An induction motor controller is provided. The induction motor controller includes a first module that derives a commanded stator voltage vector, in a rotor flux reference frame, via a rotor flux regulator loop and a torque regulator loop, which process at least partially in the rotor flux reference frame. The induction motor controller includes a second module that processes the commanded stator voltage vector to produce AC (alternating current) power for an induction motor.
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公开(公告)号：US20210347245A1
公开(公告)日：2021-11-11
申请号：US16871215
申请日：2020-05-11
申请人： Atieva, Inc.
摘要： An electric motor cooling system is provided that utilizes stator-integrated axial coolant channels and a coolant manifold centrally located within the stator to efficiently remove motor assembly heat. In order to increase the velocity of the coolant exiting the axial coolant channels, thereby improving end winding cooling uniformity, end laminations are integrated into the stator which restrict the flow of coolant from the axial coolant channels.
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公开(公告)号：US20200180432A1
公开(公告)日：2020-06-11
申请号：US16216043
申请日：2018-12-11
申请人： Atieva, Inc.
摘要： A feedback system is provided for use with an electric vehicle's accelerator pedal, where the pedal is adjustable between a fully depressed position and a fully released position, and where a neutral pedal position is located between the fully depressed and fully released positions. When the pedal is located at the neutral position, the vehicle power train does not apply any torque; when the pedal is located between the neutral position and the fully depressed position, the vehicle power train applies a driving torque; and when the pedal is located between the neutral position and the fully released position, the vehicle power train applies a braking torque. The feedback system automatically sets the fully released position for the accelerator pedal based on the available regenerative braking torque.
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公开(公告)号：US10521519B2
公开(公告)日：2019-12-31
申请号：US13948330
申请日：2013-07-23
申请人： Atieva, Inc.
发明人： Yifan Tang
摘要： A rotor flux estimator is provided. The rotor flux estimator includes an estimation module that generates a first rotor flux vector expressed in a phase voltage reference frame and a second rotor flux vector expressed in the phase voltage reference frame, from a stator voltage vector expressed in a phase voltage reference frame, a rotational speed of a rotor, and a stator current vector expressed in the phase voltage reference frame. The estimation module includes at least one processor and the estimation module includes a rotor flux current model and a rotor flux voltage model.
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公开(公告)号：US20190162823A1
公开(公告)日：2019-05-30
申请号：US15822287
申请日：2017-11-27
申请人： Atieva, Inc.
IPC分类号： G01S7/484 , G01C21/36 , G01C21/28 , G01S17/93 , G01S17/89 , G01S17/02 , G01S17/10 , G05D1/02
摘要： A light detection and ranging (lidar) system is provided that is incorporated into a vehicle and which is configured to efficiently adapt to varying road conditions as well as potential obstacles that may lie in the vehicle's pathway. The system employs a spatial light modulator (SLM) to create a plurality of illumination zones within the system's field of view. The SLM allows the lidar system to alter the size of each illumination zone as well as the light intensity within each of the zones as required by road conditions and potential obstacles.
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公开(公告)号：US10232731B2
公开(公告)日：2019-03-19
申请号：US15583757
申请日：2017-05-01
申请人： Atieva, Inc.
发明人： Jong Yon Kim
IPC分类号： H01M10/46 , B60L11/18 , B60L1/02 , B60L1/14 , H02J7/00 , H01M10/42 , H01M10/44 , H01M10/48 , H01M10/625 , H01M10/615
摘要： A system is provided that selectively heats the battery or battery module with the lowest voltage when the battery pack is at a low charge level, thereby decreasing the internal resistance and mitigating the magnitude of the voltage drop of the affected battery/battery module. As a result, termination of the battery pack's discharge cycle is delayed and the driving range of the vehicle is increased, thereby giving the driver a little more time and driving range to reach a charging station.
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公开(公告)号：US10205150B2
公开(公告)日：2019-02-12
申请号：US15057183
申请日：2016-03-01
申请人： Atieva, Inc.
摘要： A battery assembly utilizing a compact and robust bus bar configuration is provided. The batteries within the assembly are divided into groups with each group formed from at least two rows of batteries. The batteries within each battery group are connected in parallel and the groups are connected in series. The batteries are interconnected using a plurality of non-overlapping bus bars configured in an alternating pattern with the plurality of battery groups, where each of the bus bars includes multiple interconnect mounting platforms. The interconnect mounting platforms simplify coupling multiple rows of batteries to each bus bar while minimizing bus bar current density variations and insuring that individual interconnect resistance remains relatively low and at about the same level per battery.
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