Patents by Inventor DONGXU LI
DONGXU LI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12247893Abstract: A vehicle and a drive system include a method of operating the vehicle. In another exemplary embodiment, a drive system of a vehicle is disclosed. The drive system includes a first sensor, a second sensor and a processor. The first sensor is disposed at a first location of the drive system for measuring a first angle of rotation. The second sensor is disposed at a second location of the drive system for measuring a second angle of rotation. The processor is configured to determine a torque transferred between the first location and the second location based on a difference between the first angle of rotation and the second angle of rotation and control an operation of the drive system based on the torque.Type: GrantFiled: January 13, 2023Date of Patent: March 11, 2025Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Dongxu Li, Chunhao J. Lee, Farzad Samie, Paul Guillermo Otanez, Suresh Gopalakrishnan
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Patent number: 12234869Abstract: A clutch control system for a vehicle includes: a reset module configured to selectively start a reset operation of a clutch actuator of a clutch that engages and disengages an electric propulsion motor to and from a gearset; a target position module configured to perform the reset operation by setting a target position of the clutch actuator to follow a predetermined position profile for the reset operation, the reset operation including (a) opening an orifice between a hydraulic fluid reservoir and an pressure chamber of the clutch actuator (b) closing the orifice after the opening; and a clutch control module configured to actuate the clutch actuator based on the target position thereby performing the reset operation.Type: GrantFiled: May 22, 2024Date of Patent: February 25, 2025Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Dongxu Li, Edward W. Mellet, Matthew Pruski, John Jancowski-Walsh
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Patent number: 12233748Abstract: A vehicle includes two or more battery packs configured to power a motor. A controller is configured to dynamically activate an operational mode during operation. The operational mode is one of multiple possible operational modes including a first operational mode defining a series connection between the two or more battery packs and second operational mode defining a parallel connection between the two or more battery packs. The connection between the battery packs is controlled by a first plurality of switches. A plurality of low voltage loads are connected to a subset of the battery packs in the battery packs such that a power output of the subset of the battery packs provides full power to the plurality of low voltage loads. The plurality of low voltage loads are connected to only the subset of the battery packs in both the first operational mode and the second operational mode.Type: GrantFiled: June 16, 2023Date of Patent: February 25, 2025Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Chunhao J. Lee, Suresh Gopalakrishnan, Yongjie Zhu, Dongxu Li, Muhammad Hussain Alvi
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Patent number: 12198432Abstract: Embodiments described a method of video-text pre-learning to effectively learn cross-modal representations from sparse video frames and text. Specifically, an align and prompt framework provides a video and language pre-training framework that encodes the frames and text independently using a transformer-based video encoder and a text encoder. A multi-modal encoder is then employed to capture cross-modal interaction between a plurality of video frames and a plurality of texts. The pre-training includes a prompting entity modeling that enables the model to capture fine-grained region-entity alignment.Type: GrantFiled: December 30, 2021Date of Patent: January 14, 2025Assignee: Salesforce, Inc.Inventors: Dongxu Li, Junnan Li, Chu Hong Hoi
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Patent number: 12194892Abstract: An electric vehicle, and braking system and a method of operating the electric vehicle. The braking system includes a mechanical braking system, a regenerative braking system, and a controller. The controller is configured to calculate a total braking torque for operating the electric vehicle at a selected velocity during braking, determine an available regenerative braking torque via the regenerative braking system, calculate a mechanical brake torque for the mechanical braking system from the total braking torque and the available regenerative brake torque, and apply the mechanical brake torque at the mechanical braking system.Type: GrantFiled: July 22, 2022Date of Patent: January 14, 2025Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventor: Dongxu Li
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Publication number: 20240416796Abstract: A vehicle includes two or more battery packs configured to power a motor. A controller is configured to dynamically activate an operational mode during operation. The operational mode is one of multiple possible operational modes including a first operational mode defining a series connection between the two or more battery packs and second operational mode defining a parallel connection between the two or more battery packs. The connection between the battery packs is controlled by a first plurality of switches. A plurality of low voltage loads are connected to a subset of the battery packs in the battery packs such that a power output of the subset of the battery packs provides full power to the plurality of low voltage loads. The plurality of low voltage loads are connected to only the subset of the battery packs in both the first operational mode and the second operational mode.Type: ApplicationFiled: June 16, 2023Publication date: December 19, 2024Inventors: Chunhao J. Lee, Suresh Gopalakrishnan, Yongjie Zhu, Dongxu Li, Muhammad Hussain Alvi
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Patent number: 12152893Abstract: A trip energy estimation system for a vehicle includes a traffic speed module configured to determine an average traffic speed along a projected route, a path information module configured to output path information indicating route features along the projected route, a perceived speed module configured to output a perceived vehicle speed along the projected route based on the average traffic speed and the path information, and a dynamic driving module configured to calculate and output a predicted driver speed based on the perceived vehicle speed and a feedback input indicative of the predicted driver speed. The dynamic driving module is configured to execute a machine learning algorithm to calculate the predicted driver speed.Type: GrantFiled: March 22, 2022Date of Patent: November 26, 2024Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Yongjie Zhu, Dongxu Li, Yue-Yun Wang, Chen-Fang Chang, Chunhao J. Lee, Brandon D. Mazzara
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Patent number: 12146535Abstract: A vehicle includes a transmission that performs a method of operating a clutch of a vehicle. The vehicle includes the clutch, an actuator device and a processor. The actuator device includes a piston movable to operate the clutch. The processor is configured to receive a pressure signal indicative of a selected fluid pressure for operating the clutch, determine a position for the piston in the actuator device from the pressure signal, and move the piston to the position to operate the clutch at the selected fluid pressure.Type: GrantFiled: November 10, 2022Date of Patent: November 19, 2024Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Dongxu Li, Michael Ding, Bryan John Williams, Chunhao J. Lee, Zhen J. Zhang
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Publication number: 20240370718Abstract: Embodiments described herein provide a method of generating a multi-modal task output to a text instruction relating to inputs of multiple different modalities (e.g., text, audio, video, 3D). The method comprises receiving, via a data interface, a first input of a first modality, a second input of a second modality and the text instruction relating to the first and the second inputs; encoding, by a first multimodal encoder adapted for the first modality, the first input of the first modality into a first encoded representation conditioned on the text instruction; encoding, by a second multimodal encoder adapted for the second modality, the second input of the second modality into a second encoded representation conditioned on the text instruction; and generating, by a neural network based language model, the multi-modal task output based on an input combining the first encoded representation, the second encoded representation, and the text instruction.Type: ApplicationFiled: December 29, 2023Publication date: November 7, 2024Inventors: Artemis Panagopoulou, Le Xue, Ning Yu, Junnan Li, Dongxu Li, Silvio Savarese, Shafiq Rayhan Joty, Ran Xu, Caiming Xiong, Juan Carlos Niebles Duque
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Publication number: 20240367552Abstract: A method and apparatus for heating a battery pack in an electrified vehicle provides a zero d-axis current command and a zero q-axis current command to a field-oriented controller for an alternating current (AC) motor coupled to the battery pack through a power inverter module controlled by the field-oriented controller. An AC signal is injected onto the d-axis of the field-oriented controller resulting in an AC current through the battery pack effecting AC resistance heating.Type: ApplicationFiled: May 3, 2023Publication date: November 7, 2024Inventors: Renato Amorim Torres, Lei Hao, Suresh Gopalakrishnan, Chandra S. Namuduri, Dongxu Li
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Publication number: 20240361360Abstract: A current sensing apparatus includes a planar current conductor with a current shaping section, designed to carry an alternating current (AC) current with a maximum frequency. The current shaping section of the conductor consists of a pair of adjacent legs separated by a slot, which shapes the AC current to flow around the slot in opposite directions. The legs of the current conductor have a width no greater than twice the skin depth of the AC current at a frequency of at least half of the maximum frequency. The apparatus also includes a differential current sensor that measures the directional components of the AC current on opposite sides of the slot. This configuration allows for accurate current sensing while minimizing the effect of the skin effect at high frequencies, making it suitable for use in various applications where a broad range of fundamental frequencies are expected.Type: ApplicationFiled: April 25, 2023Publication date: October 31, 2024Inventors: Muhammad Hussain Alvi, Suresh Gopalakrishnan, Chunhao J. Lee, Dongxu Li
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Publication number: 20240356361Abstract: An electric vehicle includes a system performing a method of charging a battery of the electric vehicle. The system includes an electrical motor having a rotor and a plurality of windings. The vehicle is turned off to allow the rotor to come to rest at an initial rotor position. The processor controls a current through the motor to rotate the rotor to locate a boundary of an electrical lash region associated with the rotor, determines a selected winding of the plurality of windings having a phase vector located close to the electrical lash region, deactivates the selected winding, controls flow of a first current through the motor with the selected winding deactivated to rotate the rotor towards a direction of the selected winding, and controls flow of a second current from a charging station to the battery through the electric motor with the rotor rotated towards the selected winding.Type: ApplicationFiled: April 20, 2023Publication date: October 24, 2024Inventors: Dongxu Li, Minh-Khai Nguyen, Avoki M. Omekanda, Chandra S. Namuduri, Rashmi Prasad, Lei Hao
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Patent number: 12110295Abstract: Disclosed herein are WD40 repeat domain protein 5 (WDR5) degradation/disruption compounds including a WDR5 ligand, a degradation/disruption tag, and a linker, and methods of using such compounds in the treatment of WDR5-mediated diseases.Type: GrantFiled: June 21, 2019Date of Patent: October 8, 2024Assignees: Icahn School of Medicine at Mount Sinai, The University of North Carolina at Chapel HillInventors: Jian Jin, Gang Wang, Jing Liu, Xufen Yu, Dongxu Li
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Patent number: 12104682Abstract: Presented are torque converters (TC) with hydraulic systems for converter feed and clutch control, methods for making/operating such TC assemblies, and vehicles equipped with such TC assemblies. A TC assembly includes a housing that drivingly connects to an electric motor, and an output member that drivingly connects to a multi-gear transmission. Rotatable within the TC housing are a turbine attached to the TC output member and an impeller juxtaposed with the turbine. A lockup clutch disposed inside the TC housing, between the turbine and housing, is operable to lock the housing to the output member. A disconnect clutch disposed inside the housing, between the impeller and housing, is operable to lock the housing to the impeller. A pump is attached to the TC housing and drivingly connected to the motor for feeding fluid into the housing to increase pressure within the TC chamber and activate the lockup and disconnect clutches.Type: GrantFiled: December 23, 2021Date of Patent: October 1, 2024Assignee: GM Global Technology Operations LLCInventors: Chunhao J. Lee, Norman K. Bucknor, Dongxu Li, Chengwu Duan, Lei Hao
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Publication number: 20240317235Abstract: A system for controlling a transmission state of a vehicle includes a controller connected to a first drive system and a first transmission including a gear system, a first clutch and a second clutch. The controller is configured to receive a request to change from an initial transmission state to a target transmission state when a propulsion torque is applied to the vehicle. The controller is configured to distribute the propulsion torque such that all of the propulsion torque is applied by a second drive system and the first drive system does not provide any propulsion torque to the vehicle, fully release an off-going clutch from the gear system, control a motor speed based on a rotational speed relation of the target transmission state to reduce a slip speed of the on-going clutch, and fully engage an on-coming clutch to put the first drive system in the target transmission state.Type: ApplicationFiled: March 21, 2023Publication date: September 26, 2024Inventors: Chunhao J. Lee, Dongxu LI, Farzad Samie, Paul Guillermo Otanez, Su-Yang Shieh
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Publication number: 20240297516Abstract: A system for supplying power to one or more electrical loads in a vehicle includes a conversion system connected to a battery system, the battery system configured to provide a voltage to a propulsion system of the vehicle via a propulsion bus, the conversion system including a conversion device and a pre-charge circuit selectively connected to the propulsion bus by a first switch, the conversion system selectively connected to the one or more electrical loads. The system also includes a controller configured to operate the conversion system to electrically connect the conversion device and the pre-charge circuit to the battery system and the one or more electrical loads, the controller configured to adjust a battery system voltage from the battery system to a load voltage of the one or more electrical loads based on a mismatch between the battery system voltage and the load voltage.Type: ApplicationFiled: March 2, 2023Publication date: September 5, 2024Inventors: Chunhao J. Lee, Dongxu Li, Suresh Gopalakrishnan, Lei Hao, Chandra S. Namuduri
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Patent number: 12074466Abstract: A system for controlling propulsion in a vehicle includes a switching system connected to a battery system connected to a drive unit and to one or more electrical loads by a propulsion bus. A controller is configured to control the switching system to vary a voltage applied to the drive unit. The controller is configured to receive a request to transition between operating modes, the transition including a change of a voltage applied to the drive unit from an initial voltage level to a target voltage level. The controller is configured to sequentially perform deactivating the one or more electrical loads, based on the target voltage being higher than the initial voltage, pre-charging the one or more electrical loads, based on the target voltage being lower than the initial voltage, performing a discharge procedure, and operating the switching system to apply the voltage at the target voltage level.Type: GrantFiled: January 6, 2023Date of Patent: August 27, 2024Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Chunhao J. Lee, Suresh Gopalakrishnan, Dongxu Li, Muhammad Hussain Alvi, Yongjie Zhu
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Publication number: 20240279261Abstract: Embodiments of the present disclosure provide a method for preparing a high-purity arabinose crystal, comprising operations of dissolving, blending, ion exchange, decolorization and filtration, fine filtration, evaporation and concentration, crystallization, centrifugation, and drying performed in sequence on a low-purity arabinose crystal. Throughout the operations of preparing the arabinose crystal, a pH value of a material may be controlled between 4.3 and 7.5, and a temperature may not exceed 70° C. This prevents arabinose from transforming into impurities under a high temperature, thereby maintaining and improving a purity of the prepared arabinose crystal.Type: ApplicationFiled: April 30, 2024Publication date: August 22, 2024Applicant: ZHEJIANG HUAKANG PHARMACEUTICAL CO., LTD.Inventors: Xinfeng HAN, Dongxu LI, Mingqian YANG, Chengjun LIAO, Shufang QIN, Jiaxing LUO
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Publication number: 20240253517Abstract: An electric vehicle includes a drive system which operates a method of transferring power between the vehicle and an external power grid. The drive system includes a battery, a rectifier, and a processor. The processor is configured to connect the rectifier between an alternating current (AC) port of an outlet of an external power grid and the battery, the rectifier configured to convert between an AC power at the AC port on a grid side of the rectifier and a direct current (DC) power at a vehicle side of the rectifier in order to transfer power bi-directionally between the external power grid and the battery.Type: ApplicationFiled: January 26, 2023Publication date: August 1, 2024Inventors: Lei Hao, Suresh Gopalakrishnan, Peng Peng, Dongxu Li, Chandra S. Namuduri, Muhammad Hussain Alvi
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Publication number: 20240253640Abstract: A vehicle includes a control system that performs method of operating the vehicle. The control system includes a first motor processor associated with a first motor of the vehicle. The first motor processor receives a torque command from a vehicle motion control module, coordinates an allocation of the torque command into a first motor torque at the first motor and a transmission torque at a first transmission associated with the first motor, and controls the first motor to apply the torque command at the first motor.Type: ApplicationFiled: February 1, 2023Publication date: August 1, 2024Inventors: Dongxu Li, Su-Yang Shieh, Chunhao J. Lee, Paul Guillermo Otanez, Jason C. Jousma, Matthew Pruski