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    ENERGY CONVERSION DEVICE AND VEHICLE
    41.
    发明申请
    ENERGY CONVERSION DEVICE AND VEHICLE 有权

    公开(公告)号：US20230097060A1

    公开(公告)日：2023-03-30

    申请号：US18074233

    申请日：2022-12-02

    Applicant: BYD COMPANY LIMITED

    Inventor： Heping LING ,  Lei YAN ,  Yong XIONG ,  Chen HONG ,  Junwei ZHANG

    IPC: H02P29/68 ,  H02P27/06

    Abstract: An energy conversion device is provided, including: a first electrical motor control circuit, where the first electrical motor control circuit is connected with a battery pack; a second electrical motor control circuit, where the second electrical motor control circuit is connected with the first electrical motor control circuit in parallel; and a controller, configured to: when operating in a first control mode, control the first electrical motor control circuit to charge and discharge the battery pack to heat the battery pack, and control the second electrical motor control circuit to output torque.

    ENERGY CONVERSION DEVICE AND VEHICLE
    42.
    发明申请
    ENERGY CONVERSION DEVICE AND VEHICLE 有权

    公开(公告)号：US20220329195A1

    公开(公告)日：2022-10-13

    申请号：US17763962

    申请日：2020-08-18

    Applicant: BYD COMPANY LIMITED

    Inventor： Heping LING ,  Jicheng LI ,  Changjiu LIU ,  Feiyue XIE ,  Yuxin ZHANG

    IPC: H02P27/08 ,  B60L53/22 ,  B60L1/02 ,  H02M7/797 ,  H02P25/22

    Abstract: An energy conversion device is provided. The energy conversion device includes a reversible pulse-width modulation (PWM) rectifier (102) and a motor coil (103). The motor coil (103) includes L sets of winding units, and each set of winding unit is connected with the reversible PWM rectifier (102), where L≥2 and is a positive integer. At least two sets of heating circuits of a to-be-heated device are formed by an external power supply (100), the reversible PWM rectifier (102), and the winding units in the motor coil (103). The energy conversion device controls the reversible PWM rectifier (102) according to a control signal, so that a current outputted from the external power supply (100) flows through at least two sets of winding units in the motor coil (103) to generate heat, and cause a vector sum of resultant current vectors of the at least two sets of the winding units on a quadrature axis of a synchronous rotating reference frame based on rotor field orientation of the motor to be zero.

    ENERGY CONVERSION APPARATUS AND VEHICLE
    43.
    发明申请
    ENERGY CONVERSION APPARATUS AND VEHICLE 有权

    公开(公告)号：US20220289053A1

    公开(公告)日：2022-09-15

    申请号：US17635620

    申请日：2020-08-13

    Applicant: BYD COMPANY LIMITED

    Inventor： Yubo LIAN ,  Heping LING ,  Jicheng LI ,  Hua PAN ,  Feiyue XIE

    IPC: B60L53/24 ,  H02M7/797 ,  B60L53/22 ,  H02J7/00 ,  B60L58/14 ,  B60L58/15

    Abstract: The present invention relates to the technical field of vehicles, and provides an energy conversion device and a vehicle. The energy conversion device includes a reversible pulse-width modulation (PWM) rectifier, a motor coil connected with the reversible PWM rectifier, a one-way conduction module, and a capacitor. A DC charging circuit or a DC discharging circuit is formed by an external DC port with an external battery by using the energy conversion device, and a driving circuit is formed by the external battery with the reversible PWM rectifier and the motor coil in the energy conversion device. The one-way conduction module is connected between a first end of the capacitor and a second end of the external DC port, or the one-way conduction module is connected between a second end of the capacitor and a first end of the external DC port.

    VEHICLE TORQUE CONTROL METHOD AND APPARATUS, ELECTRONIC DEVICE, AND STORAGE MEDIUM
    46.
    发明申请
    VEHICLE TORQUE CONTROL METHOD AND APPARATUS, ELECTRONIC DEVICE, AND STORAGE MEDIUM 有权

    公开(公告)号：US20250074209A1

    公开(公告)日：2025-03-06

    申请号：US18952913

    申请日：2024-11-19

    Applicant: BYD COMPANY LIMITED

    Inventor： Heping LING ,  Mingchuan SHI ,  Hao ZHANG ,  Chao YIN ,  Hongxia WANG

    IPC: B60L15/20

    Abstract: A vehicle torque control method includes: a wheel speed of a wheel corresponding to a vehicle drive shaft is acquired by a vehicle controller, and an equivalent rotating speed of a motor is calculated based on the wheel speed of the wheel. An actual rotating speed of the motor corresponding to the drive shaft is acquired by the vehicle controller, and based on the equivalent rotating speed of the motor and the actual rotating speed of the motor corresponding to the drive shaft, an equivalent rotating speed difference of the motor corresponding to the drive shaft is calculated. A correcting torque value is acquired by the vehicle controller, based on the equivalent rotating speed difference of the motor corresponding to the drive shaft. An output torque of the motor corresponding to the drive shaft is adjusted by the vehicle controller, based on the correcting torque value.

    VEHICLE TORQUE CONTROL METHOD AND APPARATUS, ELECTRONIC DEVICE AND STORAGE MEDIUM
    47.
    发明申请
    VEHICLE TORQUE CONTROL METHOD AND APPARATUS, ELECTRONIC DEVICE AND STORAGE MEDIUM 有权

    公开(公告)号：US20250050731A1

    公开(公告)日：2025-02-13

    申请号：US18933585

    申请日：2024-10-31

    Applicant: BYD COMPANY LIMITED

    Inventor： Heping LING ,  Mingchuan SHI ,  Hongxia WANG ,  Hao ZHANG ,  Binhao ZHOU

    IPC: B60K23/08 ,  B60K17/356

    Abstract: A vehicle torque control method, comprising: acquiring a front axle equivalent axle speed and a rear axle equivalent axle speed of a vehicle, and determining an equivalent axle speed difference between front axles and rear axles of the vehicle according to the front axle equivalent axle speed and the rear axle equivalent axle speed; determining a drive shaft torque adjustment value according to the equivalent axle speed difference; and adjusting an output torque of a drive shaft motor according to the drive shaft torque adjustment value. Also disclosed are a vehicle torque control apparatus, an electronic device, a storage medium, and a vehicle.

    AUTOMOBILE BATTERY THERMAL MANAGEMENT SYSTEM, AUTOMOBILE THERMAL MANAGEMENT SYSTEM, AND ELECTRIC AUTOMOBILE
    50.
    发明公开
    AUTOMOBILE BATTERY THERMAL MANAGEMENT SYSTEM, AUTOMOBILE THERMAL MANAGEMENT SYSTEM, AND ELECTRIC AUTOMOBILE 审中-公开

    公开(公告)号：US20230294557A1

    公开(公告)日：2023-09-21

    申请号：US18018252

    申请日：2021-07-26

    Applicant: BYD COMPANY LIMITED

    Inventor： Yubo LIAN ,  Heping LING ,  Yong XIONG ,  Gan SONG ,  Yili LUO

    IPC: B60L58/26 ,  B60L58/27

    CPC classification number: B60L58/26 ,  B60L58/27

    Abstract: A vehicle battery thermal management system includes a heat conducting element connected to a vehicle air conditioning system and a self-heating circuit connected to a vehicle power battery. The heat conducting element, a compressor of the vehicle air conditioning system, and an outdoor condenser of the vehicle air conditioning system form a battery refrigeration loop, and the battery refrigeration loop absorbs heat from the vehicle power battery through a refrigerant in the heat conducting element to cool down the vehicle power battery. The self-heating circuit and the vehicle power battery form a battery self-heating loop, and the self-heating circuit is configured to control the vehicle power battery to perform high-frequency alternating charging and discharging for self-heating in the battery self-heating loop.

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