Patents by Inventor Jianwen Li

Jianwen 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).

  • Patent number: 11965594
    Abstract: An electronic parking mechanism that includes a parking cam assembly, a pawl assembly and a parking gear. The parking cam assembly includes a parking guide shaft and a parking cam that is sleeved on the parking guide shaft, and one side of the parking cam is provided with an arc protrusion along a circumferential direction so that as the parking cam rotates, the pawl assembly is in a first position where the pawl assembly parks in the parking gear and a second position where the pawl assembly parks out the parking gear, respectively. The pawl assembly includes a pawl and a pawl shaft, an upper part of the pawl contacts the parking cam, the pawl shaft is provided on a side of the pawl that can rotate around the pawl shaft.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: April 23, 2024
    Assignee: Jing-Jin Electric Technologies Co., Ltd.
    Inventors: Jianwen Li, Ran Sun, Lena Jin
  • Publication number: 20240104371
    Abstract: Embodiments of a generative framework comprise cooperative learning of two generative flow models, in which the two models are iteratively updated based on the jointly synthesized examples. In one or more embodiments, the first flow model is a normalizing flow that transforms an initial simple density into a target density by applying a sequence of invertible transformations, and the second flow model is a Langevin flow that runs finite steps of gradient-based MCMC toward an energy-based model. In learning iterations, synthesized examples are generated by using a normalizing flow initialization followed by a short-run Langevin flow revision toward the current energy-based model. Then, the synthesized examples may be treated as fair samples from the energy-based model and the model parameters are updated, while the normalizing flow directly learns from the synthesized examples by maximizing the tractable likelihood. Also provided are both theoretical and empirical justifications for the embodiments.
    Type: Application
    Filed: September 19, 2022
    Publication date: March 28, 2024
    Applicant: Baidu USA LLC
    Inventors: Jianwen XIE, Yaxuan ZHU, Jun LI, Ping LI
  • Publication number: 20240093768
    Abstract: A dual-motor drive assembly and a vehicle are disclosed. The dual-motor drive assembly comprises a first motor and a second motor arranged coaxially, a first gear transmission, a second gear transmission, and one or more idle gear pairs. The first gear transmission is driven by the first motor, and the second gear transmission is driven by the second motor. The idle gear pairs are respectively arranged in the first gear transmission and the second gear transmission and are configured to increase a distance between an output shaft of the first motor and an end shaft of the first gear transmission.
    Type: Application
    Filed: June 8, 2021
    Publication date: March 21, 2024
    Applicant: Jing-Jin Electric Technologies Co., Ltd.
    Inventors: Jianwen LI, Fei WANG, Ping YU
  • Publication number: 20240081705
    Abstract: The present disclosure provides a non-contact fatigue detection system and method based on rPPG. The system and method adopt multi-thread synchronous communication for real-time acquisition and processing of rPPG signal, enabling fatigue status detection. In this setup, the first thread handles real-time rPPG data capture, storage and concatenation, while the second thread conducts real-time analysis and fatigue detection of rPPG data. Through a combination of skin detection and LUV color space conversion, rPPG raw signal extraction is achieved, effectively eliminating interference from internal and external environmental facial noise; Subsequently, an adaptive multi-stage filtering process enhances the signal-to-noise ratio, and a multi-dimensional fusion CNN model ensures accurate detection of respiration and heart rate.
    Type: Application
    Filed: November 16, 2023
    Publication date: March 14, 2024
    Applicant: CENTRAL CHINA NORMAL UNIVERSITY
    Inventors: Liang ZHAO, Sannyuya LIU, Zongkai YANG, Xiaoliang ZHU, Jianwen SUN, Qing LI, Zhicheng DAI
  • Publication number: 20240035557
    Abstract: An electric drive power transmission system box assembly is provided having stepped pin positioning and a mounting method of the electric drive power transmission system box assembly. The box assembly includes a housing shaft string assembly, stepped pins, a first housing, and a first bearing. The housing shaft string assembly includes a housing and a shaft string supported on the housing. Each stepped pin includes a matching section and a guide section, the diameter of the matching section is greater than the diameter of the guide section, a tail end portion of the matching section is fixed in a fixing pin hole of the housing, the first housing is mounted and fixed to the housing shaft string assembly under the guide of the guide section, and a rear end of the shaft string is supported on the first housing by means of the first bearing.
    Type: Application
    Filed: June 8, 2021
    Publication date: February 1, 2024
    Inventors: Jianwen LI, Xudong YANG, Ruikun WANG
  • Patent number: 11885362
    Abstract: A quick-release connection device includes a main load-bearing structural rod, a safety pin, a cam handle, a spring piece and a clamping piece. A free end of the structural rod is provided with a pin hole for insertion of the pin. The cam handle is connected to an end opposite to the free end. One end of the spring piece is connected to the cam handle, and the other end is provided with an insertion hole such that it can be sleeved on the free end, and limited by the pin to form locking connection with the structural rod. One end of the clamping piece is connected to the cam handle or spring piece, and the other end is provided with an opening such that it can be sleeved on the free end, and can be limited by the spring piece to form locking connection with the structural rod.
    Type: Grant
    Filed: July 7, 2023
    Date of Patent: January 30, 2024
    Assignee: Shenzhen Asia Pacific Aviation Technology Co., Ltd
    Inventors: Naiwen Wang, Jianwen Li
  • Publication number: 20240026939
    Abstract: A monostable electromagnetic clutch is disclosed, which comprises a movable member, a magnetic assembly, a fixed disc, and a plurality of iron cores, wherein the magnetic assembly is connected to the fixed disc, the iron cores cross through the magnetic assembly and are connected to the fixed disc, the movable member is provided thereon with an spring member, and under an action of an electromagnetic force of the magnetic assembly and an spring force of the spring member, the movable member can reciprocate at a side of the magnetic assembly to keep the movable member and the iron cores in an engaged state or a disengaged state. The structural design of the present disclosure is flexible and compact, and can be combined in a different way according to different applications and different structural spaces.
    Type: Application
    Filed: March 30, 2023
    Publication date: January 25, 2024
    Inventors: Yang CAO, Ping Yu, Jianwen Li, Guoshan Liu, Pengyuan Zhou
  • Patent number: 11879505
    Abstract: An electromagnetic clutch is provide that includes a fixed component, a driven component and an elastic component. The fixed component includes a magnetic yoke provided thereon with multiple iron cores, and each iron core is provided thereon with a coil. The driven component includes an armature disc provided thereon with multiple magnets. The armature disc and the magnetic yoke are disposed correspondingly, and the iron cores and the magnets are disposed correspondingly. The elastic component is used to keep the armature disc at a disengaged position from magnetic yoke. When the coil is energized in a forward direction, the iron core attracts the magnet and when the coil is energized in a reverse direction, the iron core generates an electromagnetic force to reduce an attractive force of the magnet.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: January 23, 2024
    Assignee: Jing-Jin Electric Technologies Co., Ltd
    Inventors: Ping Yu, Changqi Yang, Jianwen Li, Yang Cao
  • Publication number: 20230358264
    Abstract: A quick-release connection device includes a main load-bearing structural rod, a safety pin, a cam handle, a spring piece and a clamping piece. A free end of the structural rod is provided with a pin hole for insertion of the pin. The cam handle is connected to an end opposite to the free end. One end of the spring piece is connected to the cam handle, and the other end is provided with an insertion hole such that it can be sleeved on the free end, and limited by the pin to form locking connection with the structural rod. One end of the clamping piece is connected to the cam handle or spring piece, and the other end is provided with an opening such that it can be sleeved on the free end, and can be limited by the spring piece to form locking connection with the structural rod.
    Type: Application
    Filed: July 7, 2023
    Publication date: November 9, 2023
    Inventors: Naiwen WANG, Jianwen LI
  • Publication number: 20230358282
    Abstract: An electromagnetic clutch is provide that includes a fixed component, a driven component and an elastic component. The fixed component includes a magnetic yoke provided thereon with multiple iron cores, and each iron core is provided thereon with a coil. The driven component includes an armature disc provided thereon with multiple magnets. The armature disc and the magnetic yoke are disposed correspondingly, and the iron cores and the magnets are disposed correspondingly. The elastic component is used to keep the armature disc at a disengaged position from magnetic yoke. When the coil is energized in a forward direction, the iron core attracts the magnet and when the coil is energized in a reverse direction, the iron core generates an electromagnetic force to reduce an attractive force of the magnet.
    Type: Application
    Filed: December 30, 2020
    Publication date: November 9, 2023
    Inventors: Ping YU, Changqi YANG, Jianwen LI, Yang CAO
  • Patent number: 11808351
    Abstract: A mechanical unlocking mechanism for electronic parking is provided, which comprises a parking cam assembly, a pawl assembly, a pull rod assembly and a parking gear; the parking cam assembly comprises a parking guide shaft and a parking cam, the parking cam is sleeved on the parking guide shaft, at least a first convex part and a second convex part are provided at two sides of the parking cam, and a connecting part is provided on the second convex part; the pull rod assembly is connected with the parking cam via the connecting part, and the pull rod assembly pulls the second convex part to drive the parking cam to rotate; the parking gear can be fixed or rotatable according to the pawl assembly being in a first position where the parking gear parks in or a second position where the parking gear parks out as the parking cam rotates.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: November 7, 2023
    Assignee: JING-JIN ELECTRIC TECHNOLOGIES CO., LTD.
    Inventors: Defeng Hou, Ran Sun, Jianwen Li
  • Publication number: 20230349430
    Abstract: A control method of an electromagnetic clutch in a hybrid power system and a hybrid power system are disclosed. Besides the electromagnetic clutch, the hybrid power system further comprises an engine or motor, a motor, an electromagnetic clutch controller and a power supply system. The power supply system comprises: a low-voltage battery, a standby power supply system and a switching circuit. The electromagnetic clutch is used to control connection of the motor. The control method comprises: monitoring whether a voltage of the low-voltage battery is lower than a target value, and judging whether the low-voltage battery fails; using the switching circuit to switch to the standby power supply system to supply power to the electromagnetic clutch and the electromagnetic clutch controller; using the electromagnetic clutch controller to judge an engaged or disengaged state of the electromagnetic clutch; and further controlling the electromagnetic clutch according to the engaged or disengaged state.
    Type: Application
    Filed: May 6, 2021
    Publication date: November 2, 2023
    Inventors: Ping YU, Jianwen LI, Yang CAO
  • Patent number: 11796013
    Abstract: A monostable electromagnetic clutch is provided having a movable assembly and an electromagnetic assembly. The movable assembly is provided thereon with a return springs and can pass through the electromagnetic assembly. The electromagnetic assembly generates electromagnetic force when it is energized, and under a driving action of the electromagnetic force and an spring force of the return springs, the movable assembly can reciprocate in the electromagnetic assembly.
    Type: Grant
    Filed: December 2, 2022
    Date of Patent: October 24, 2023
    Assignee: Jing-Jin Electric Technologies Co., Ltd.
    Inventors: Yang Cao, Ping Yu, Jianwen Li, Guoshan Liu
  • Patent number: 11789895
    Abstract: Embodiments described herein provide an on-chip heterogeneous Artificial Intelligence (AI) processor comprising at least two different architectural types of computation units, wherein each of the computation units is associated with a respective task queue configured to store computation subtasks to be executed by the computation unit. The AI processor also comprises a controller configured to partition a received computation graph associated with a neural network into a plurality of computation subtasks according to a preset scheduling strategy and distribute the computation subtasks to the task queues of the computation units. The AI processor further comprises a storage unit configured to store data required by the computation units to execute their respective computation subtasks and an access interface configured to access an off-chip memory. Different application tasks are processed by managing and scheduling the different architectural types of computation units in an on-chip heterogeneous manner.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: October 17, 2023
    Assignee: SHANGHAI DENGLIN TECHNOLOGIES CO., LTD.
    Inventors: Ping Wang, Jianwen Li
  • Patent number: 11782870
    Abstract: Embodiments described herein provide a configurable heterogeneous Artificial Intelligence (AI) processor comprising at least two different architectural types of computation units, a storage unit and a controller. Each of the computation units has a respective task queue. The controller is configured to partition a computation graph of a neural network into a plurality of computation subtasks and distribute the computation subtasks to the task queues of the computation units. The controller is also configured to set a dependency among the computation subtasks, synchronize the computation subtasks according to the set dependency, and control access to data involved in the computation subtasks. Different application tasks are processed by uniformly managing and scheduling the various architectural types of computation units in an on-chip heterogeneous manner, so that the AI processor can flexibly adapt to different application scenarios.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: October 10, 2023
    Assignee: SHANGHAI DENGLIN TECHNOLOGIES CO., LTD.
    Inventors: Ping Wang, Jianwen Li
  • Publication number: 20230313846
    Abstract: A monostable electromagnetic clutch is provided having a movable assembly and an electromagnetic assembly. The movable assembly is provided thereon with a return springs and can pass through the electromagnetic assembly. The electromagnetic assembly generates electromagnetic force when it is energized, and under a driving action of the electromagnetic force and an spring force of the return springs, the movable assembly can reciprocate in the electromagnetic assembly.
    Type: Application
    Filed: December 2, 2022
    Publication date: October 5, 2023
    Inventors: Yang CAO, Ping YU, Jianwen LI, Guoshan LIU
  • Patent number: 11761535
    Abstract: A mechanical unlocking mechanism for electronic parking is provided, which comprises a parking cam assembly, a pawl assembly, a parking gear, a pull cord assembly and an actuating assembly, wherein the pull cord assembly comprises a pull wire and a guide shaft screw, each of two ends of the pull wire is provided with a pull wire ball head rod, the pull wire ball head rod is connected with an end of the pull wire and is connected with an end hole of the parking guide shaft or the actuating assembly via the guide shaft screw sleeved on the pull wire. The mechanical unlocking mechanism according to the present disclosure provides an emergent mechanical unlocking function when the parking motor is powered off, and the driver can perform manual mechanical unlocking in the cab without getting off the vehicle, so it has high safety and good operation comfort.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: September 19, 2023
    Assignee: JING-JIN ELECTRIC TECHNOLOGIES CO., LTD.
    Inventors: Defeng Hou, Jianwen Li, Ran Sun, Guodong Mu
  • Patent number: 11738629
    Abstract: The present disclosure discloses a vehicle two-power-source dual driving assembly, wherein, the vehicle two-power-source dual driving assembly comprises two sets of driving units that are symmetrically arranged, the two sets of driving units connect to a same set of vehicle axle half shafts, each of the sets of driving units is provided with a power source and an automatic transmission, and each of the automatic transmissions connects to one of the vehicle axle half shafts. The automatic transmission is provided therein with an input shaft, an intermediate shaft and an output shaft that are parallel, the input shaft, the intermediate shaft and the output shaft are provided thereon with multistage gears with different transmission ratios, the power source connects to the input shaft, and the output shaft connects to a left half shaft or a right half shaft of the vehicle axle half shaft.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: August 29, 2023
    Assignee: JING-JIN ELECTRIC TECHNOLOGIES CO., LTD.
    Inventors: Ping Yu, Jianwen Li, Yongwu Wang, Zhe Jiang
  • Publication number: 20230258260
    Abstract: A liquid cooling heat dissipation structure and a gearbox casing that includes heat dissipation structure are disclosed. The heat dissipation structure includes a coolant tank and a cover plate that is used to seal the coolant tank. Two ends of the coolant tank are respectively provided with a liquid inlet and a liquid outlet. The coolant tank is provided therein with a plurality of fixed guide ribs that are arranged alternately and at intervals to form a continuous S-shaped or maze shaped channel for the coolant to flow through. The suspended guide ribs are further provided between the fixed guide ribs or between a fixed guide rib and an inner wall of the coolant tank.
    Type: Application
    Filed: August 14, 2020
    Publication date: August 17, 2023
    Inventors: Jianwen LI, Xudong YANG, Xianwen ZENG
  • Publication number: 20230258261
    Abstract: A gearbox casing is provided in which a bottom part or a side part of the gearbox casing has a number of first coolant tanks. The gearbox casing above a bottom part of the first coolant tanks is provided therein with a lubricating liquid, and the first coolant tanks are used to cool the lubricating liquid. A first coolant tank is provided therein with a number of parallel partition walls, by which the first coolant tank is separated into at least two communicated sub-tanks that are provided with first fixed guide ribs and first suspended guide ribs to divide the coolant.
    Type: Application
    Filed: August 14, 2020
    Publication date: August 17, 2023
    Inventors: Jianwen LI, Xudong YANG, Xianwen ZENG, Jiaqi LI