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    HYBRID POWER DRIVING SYSTEM AND DRIVING METHOD THEREOF
    64.
    发明公开
    HYBRID POWER DRIVING SYSTEM AND DRIVING METHOD THEREOF 有权
    混合动力系统及其驱动方法

    公开(公告)号：EP2210758A1

    公开(公告)日：2010-07-28

    申请号：EP08846206.4

    申请日：2008-10-22

    Applicant: BYD Company Limited

    Inventor： WANG, Chuanfu ,  LUO, Hongbin ,  CHEN, Wei ,  REN, Yi ,  TANG, Xiaohua ,  LAN, Haibin

    IPC: B60K6/20 ,  B60K17/06

    CPC classification number: B60W20/20 ,  B60K5/04 ,  B60K6/20 ,  B60K6/40 ,  B60K6/48 ,  B60K6/547 ,  B60K17/00 ,  B60K2001/001 ,  B60W10/02 ,  B60W10/06 ,  B60W10/08 ,  B60W10/11 ,  B60W10/26 ,  B60W20/00 ,  B60W2510/244 ,  Y02T10/6221 ,  Y02T10/6269 ,  Y02T10/6286 ,  Y10T477/23 ,  Y10T477/26

    Abstract: The present invention discloses a hybrid power driving system, comprising: an engine, a clutch, a first shaft, a second shaft disposed parallel to the first shaft, a motor, an energy storage device, and an output gear. The engine may be connected with the first shaft via the clutch. The motor is connected with the second shaft directly or indirectly, and is electrically connected with the energy storage device. The first shaft has a first gear, a second gear and a first synchronizer, in which the first gear and the second gear are mounted on the first shaft via bearings respectively, and the first synchronizer is selectively engaged with the first gear or the second gear. The second shaft may have a third gear, a fourth gear and a second synchronizer, in which the third gear may be mounted on the second shaft via a bearing. The fourth gear may be fixed to the second shaft. And the second synchronizer may be selectively engaged with the third gear or the fourth gear. The first gear may be engaged with the third gear, the second gear may be engaged with the fourth gear. And the third gear may be engaged with an output gear. The present invention also discloses a driving method of a hybrid power driving system. Through the first synchronizer and the second synchronizer selectively engaging with corresponding gears, a plurality of operating modes can be realized. And the structure is simple and compact.

    CONTROL METHOD OF ELECTROMOTOR
    65.
    发明公开
    CONTROL METHOD OF ELECTROMOTOR 有权
    REGELUNGSVERFAHRENFÜREINEN ELEKTROMOTOR

    公开(公告)号：EP2063339A1

    公开(公告)日：2009-05-27

    申请号：EP06817796.3

    申请日：2006-10-31

    Applicant: Byd Company Limited

    Inventor： TANG, Xiaohua ,  ZHOU, Xuguang ,  LUO, Hongbin ,  YU, Ming ,  LIU, Nan ,  GONG, Jian ,  YANG, Guangming

    IPC: G05D13/66 ,  H02P3/18 ,  H02P23/14 ,  H02P27/08

    CPC classification number: H02P29/0016 ,  G01D21/00 ,  G01P3/48 ,  H02P21/22

    Abstract: A control method of the electromotor comprises the following steps: setting an alternating axis target current according to the rotor angular velocity of the motor and setting a direct axis target current according to the torque of the motor; detecting and collecting the three-phase currents of the electromotor, simultaneously detecting the degree of the electromotor rotor position; converting the three-phase currents of the electromotor to an alternating axis actual current and a direct axis actual current by Park conversion and Clark conversion according to the degree of the rotor position; setting the difference between the target current and the actual current as the input of the current loop, outputting the required direct axis current and the required alternating axis current by PI regulation; calculating the three phase voltage according to the required direct axis current and the required alternating axis current output by PI regulation and the degree of the electromotor rotor position; obtaining PWM control waveform through three-phase voltage, the said PWM control waveform controlling the conversion from the direct current to the alternating current, and the converted alternating current driving the electromotor.

    Abstract translation: 电动机的控制方法包括以下步骤：根据电动机的转子角速度设定交变轴目标电流，并根据电动机的转矩设定直轴目标电流; 检测和收集电动机的三相电流，同时检测电动机转子位置的程度; 根据转子位置的程度，通过Park转换和Clark转换将电动机的三相电流转换为交变轴实际电流和直轴实际电流; 将目标电流和实际电流之间的差设置为电流环路的输入，通过PI调节输出所需的直轴电流和所需的交流轴电流; 根据所需的直轴电流和PI调节输出的所需交流轴电流和电机转子位置的程度计算三相电压; 通过三相电压获得PWM控制波形，所述PWM控制波形控制从直流到交流电的转换，以及驱动电动机的转换交流电。

    VEHICLE AND ENERGY CONVERSION DEVICE AND POWER SYSTEM THEREOF
    66.
    发明公开
    VEHICLE AND ENERGY CONVERSION DEVICE AND POWER SYSTEM THEREOF 审中-公开

    公开(公告)号：EP3992019A1

    公开(公告)日：2022-05-04

    申请号：EP20834887.0

    申请日：2020-06-18

    Applicant: BYD Company Limited

    Inventor： TENG, Jingcui ,  LIU, Yu ,  LIANG, Shulin ,  WANG, Chao ,  LUO, Hongbin

    IPC: B60L53/22 ,  B60L53/24 ,  H02J7/02 ,  H02J7/00

    Abstract: An energy conversion device is provided, including a motor coil (11), a bridge arm converter (12), and a bidirectional bridge arm (13). The bridge arm converter (12) is separately connected to the motor coil (11) and the bidirectional bridge arm (13). The motor coil (11), the bridge arm converter (12), and the bidirectional bridge arm (13) are all connected to an external charging port (10). Both the bridge arm converter (12) and the bidirectional bridge arm (13) are connected to an external battery 200. The motor coil (11), the bridge arm converter (12), and the external charging port (10) form a DC charging circuit for charging the external battery 200. The motor coil (11), the bridge arm converter (12), the bidirectional bridge arm (13), and the external charging port (10) form an AC charging circuit for charging the external battery (200). The motor coil (11), the bridge arm converter (12), and the external battery (200) form a motor drive circuit.

    BATTERY BALANCING SYSTEM, VEHICLE, BATTERY BALANCING METHOD, AND STORAGE MEDIUM
    67.
    发明公开
    BATTERY BALANCING SYSTEM, VEHICLE, BATTERY BALANCING METHOD, AND STORAGE MEDIUM 审中-公开

    公开(公告)号：EP3678276A1

    公开(公告)日：2020-07-08

    申请号：EP18851100.0

    申请日：2018-08-31

    Applicant: BYD Company Limited

    Inventor： LUO, Hongbin ,  WANG, Chao ,  SHEN, Xiaofeng ,  WANG, Chengzhi ,  ZENG, Qiuyong

    IPC: H02J7/00 ,  B60L50/50 ,  H01M10/42

    Abstract: The present application discloses a battery equalization system, a vehicle, a battery equalization method, and a storage medium. The battery equalization system includes: a collection circuit; an equalization circuit; a controller; a charging branch circuit, connected to a charging device and a battery pack; and a first power supply branch circuit, connected to the charging device and the battery equalization system, and configured to supply power to the battery equalization system. When a state-of-charge of the battery pack is full and a cell in the battery pack needs enabling of equalization, the controller controls the charging branch circuit to disconnect, and controls the first power supply branch circuit to keep connected, so that an equalization module performs equalization processing on the cell that needs enabling of equalization. By improving the electrical connection structure of the battery equalization system, the present application extends the battery equalization time, improves the battery equalization effect, and resolves the technical problem of low equalization efficiency of the battery equalization system in the related art.

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