Disconnecting differential and electric drive transmission system having the same

    公开(公告)号:US11892064B2

    公开(公告)日:2024-02-06

    申请号:US18189585

    申请日:2023-03-24

    IPC分类号: F16H48/06 F16H48/40 F16H57/00

    摘要: An electric drive transmission system includes a disconnecting differential. The disconnecting differential comprises a first one-way clutch, a second one-way clutch and an interruption device. The first one-way clutch and the second one-way clutch have opposite locking directions and are coaxially sleeved between a planet carrier and a differential housing. The interruption device comprises a power section and an interruption section, wherein the power section is located on an inner wall of a reduction gearbox, and wherein the interruption section is located on the differential housing and can shift, under the action of the power section, all rolling elements of the one-way clutch locked in a forward rotation coasting condition, thereby realizing selective releasing of the locking function of the one-way clutch.

    DISCONNECTING DIFFERENTIAL AND ELECTRIC DRIVE TRANSMISSION SYSTEM HAVING THE SAME

    公开(公告)号:US20230304566A1

    公开(公告)日:2023-09-28

    申请号:US18189585

    申请日:2023-03-24

    IPC分类号: F16H48/06 F16H57/00 F16H48/40

    摘要: The disclosure relates to the field of electric drive transmission systems for vehicles, and in particular provides a disconnecting differential and an electric drive transmission system having the disconnecting differential. The disconnecting differential comprises a first one-way clutch, a second one-way clutch and an interruption device, wherein the first one-way clutch and the second one-way clutch have opposite locking directions and are coaxially sleeved between a planet carrier and a differential housing; and the interruption device comprises a power section and an interruption section, wherein the power section is located on an inner wall of a reduction gearbox, the interruption section is located on the differential housing and can shift, under the action of the power section, all rolling elements of the one-way clutch locked in a forward rotation coasting condition, thereby realizing selective releasing of the locking function of the one-way clutch. In this way, power transmission in a reverse power transmission state such as coasting of a vehicle is selectively interrupted while achieving the speed differential and forward and reverse power transmission functions of a normal differential. The structure is novel and the operation accuracy is high, and the NVH problem during engagement can also be avoided.

    PACKAGING STRUCTURE FOR POWER MODULE, PACKAGING METHOD AND ELECTRIC VEHICLE

    公开(公告)号:US20230207548A1

    公开(公告)日:2023-06-29

    申请号:US18147415

    申请日:2022-12-28

    摘要: The disclosure relates to a packaging structure for a power module, a packaging method and an electric vehicle. The packaging structure includes: a circuit board; at least one power chip, where each power chip is fastened on the circuit board, and each power chip is integrated with a sensor that is capable of detecting a working state of the power chip; and a signal chip, where the signal chip is fastened on the circuit board and separated from the power chip, a compiling program is preset in the signal chip, the signal chip is in a communication connection with each sensor, and the signal chip is configured to be capable of being in a communication connection with a predetermined device, so as to output working state data of each power chip to the predetermined device. By detecting the working state of each power chip, the power chip can be protected precisely in real time. The signal chip serves as a connection medium between the sensor and the predetermined device, to reduce a quantity of pins, thereby avoiding generation of an excessively high parasitic inductance.

    FAULT-TOLERANT CONTROL METHOD FOR OPEN-CIRCUIT FAULT IN ALTERNATING CURRENT MOTOR AND INVERTER THEREOF

    公开(公告)号:US20240178784A1

    公开(公告)日:2024-05-30

    申请号:US18519170

    申请日:2023-11-27

    发明人: Zekun XIA Kai WANG

    摘要: The disclosure relates to the field of motor control, and more specifically, to a fault-tolerant control method and apparatus for an open-circuit fault in an alternating current motor and an inverter thereof, a computer device, and a computer storage medium. The method includes: A: determining, based on fault information of the alternating current motor and the inverter for driving the alternating current motor, a rotor fault position interval corresponding to each fault phase in one or more fault phases; B: establishing a fault-tolerant control constraint model, where the fault-tolerant control constraint model includes an open-circuit fault equation applicable to each fault phase for the corresponding rotor fault position interval; and C: determining, with the fault-tolerant control constraint model as a constraint, a phase current reference value by using a fault-tolerant control algorithm.

    VEHICLE FAULT DIAGNOSIS METHOD, DEVICE, AND COMPUTER-READABLE STORAGE MEDIUM

    公开(公告)号:US20230410572A1

    公开(公告)日:2023-12-21

    申请号:US18320269

    申请日:2023-05-19

    发明人: Xin GONG Kai WANG

    IPC分类号: G07C5/08

    CPC分类号: G07C5/0808

    摘要: The disclosure provides a vehicle fault diagnosis method and device, and a computer-readable storage medium. The vehicle fault diagnosis method includes: receiving a grayscale image, where the grayscale image represents diagnostic data for vehicle diagnosis; extracting features from the grayscale image by using a convolutional neural network, to generate a feature map; performing self-attention-based processing on the feature map to obtain a classification result, where the classification result indicates a vehicle fault condition; and performing a relevance propagation analysis based on the classification result to obtain a contribution heat map, where the contribution heat map indicates a degree of contribution of each pixel in the grayscale image to the classification result.

    CONTROL METHOD AND SYSTEM FOR VEHICLE, VEHICLE-MOUNTED CONTROL DEVICE, AND VEHICLE

    公开(公告)号:US20230377390A1

    公开(公告)日:2023-11-23

    申请号:US18320274

    申请日:2023-05-19

    发明人: Yi YUAN

    IPC分类号: G07C5/08

    CPC分类号: G07C5/0808 G07C5/0816

    摘要: The disclosure relates to a control method and system for a vehicle, a vehicle-mounted control device, and a vehicle. The control method for a vehicle in the disclosure includes: substituting an obtained vehicle control parameter of the vehicle into a preset first correlation matrix model to obtain a temperature, namely, a first temperature value, of a component; obtaining an actual temperature, namely, a second temperature value, of the component of the electric drive system; calculating a difference between the second temperature value and the first temperature value to obtain a temperature residual value; and determining health of the component of the electric drive system based on the temperature residual value.

    ELECTRIC MOTOR FOR VEHICLE, AND VEHICLE
    7.
    发明公开

    公开(公告)号:US20230283148A1

    公开(公告)日:2023-09-07

    申请号:US18176905

    申请日:2023-03-01

    IPC分类号: H02K9/19 H02K5/20 B60K1/00

    摘要: The disclosure relates to the technical field of vehicle accessories, and specifically provides an electric motor for a vehicle and a vehicle. The disclosure aims to solve the problems existing in an existing electric motor for a vehicle that during spraying and cooling of an outer surface of an iron core, a heat dissipation area of the outer surface of the iron core is small, and a convective heat transfer coefficient of a heat dissipation surface is small. To this end, the electric motor for a vehicle according to the disclosure comprises a stator and an oil intake pipeline, wherein the stator comprises a plurality of first laminations, each of the first laminations is configured into the shape of a circular ring and is provided with oil passage holes, the plurality of first laminations are stacked in an axial direction of the first laminations, the plurality of stacked first laminations jointly enclose a cylindrical structure, the oil passage holes in the plurality of first laminations are in communication with each other to form cooling oil passages, and the oil intake pipeline is in communication with the cooling oil passages; and the cooling oil passages are arranged to enable the cooling oil to flow in an axial direction of the stator, and also enable the cooling oil to flow between a plurality of cooling oil passages in a radial direction of the stator, so as to improve a cooling effect inside the stator.

    ELECTRIC MOTOR FOR VEHICLE, AND VEHICLE
    8.
    发明公开

    公开(公告)号:US20230283123A1

    公开(公告)日:2023-09-07

    申请号:US18176897

    申请日:2023-03-01

    IPC分类号: H02K1/20 H02K9/19

    CPC分类号: H02K1/20 H02K9/19

    摘要: The disclosure relates to the technical field of vehicle accessories, and specifically provides an electric motor for a vehicle and a vehicle. The disclosure aims to solve the problems existing in an existing electric motor for a vehicle that during spraying and cooling of an outer surface of an iron core, a heat dissipation area of the outer surface of the iron core is small, and a cooling oil easily flows along an outer wall of a cooling oil ring, so that an end portion of a winding cannot be cooled. To this end, the electric motor for a vehicle according to the disclosure comprises a stator, cooling oil rings, and an oil intake pipeline, wherein the cooling oil rings are fixedly connected to the stator; each of the cooling oil rings is a hollow column with a circular ring-shaped cross-section, a side wall of the hollow column is provided with a cooling oil inlet and a plurality of oil spray holes, and an inner side wall of the hollow column is further provided with an oil guide rib; the stator comprises a plurality of first laminations, each of the first laminations is provided with oil passage holes, the plurality of first laminations are stacked in an axial direction of the first laminations, the oil passage holes in the plurality of first laminations are in communication with one another to form cooling oil passages, and the oil intake pipeline is in communication with the cooling oil passages, to improve the cooling effect of the electric motor.