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    Battery equalization method and system, vehicle, storage medium, and electronic device
    2.
    发明授权
    Battery equalization method and system, vehicle, storage medium, and electronic device 有权

    公开(公告)号：US11292360B2

    公开(公告)日：2022-04-05

    申请号：US16642811

    申请日：2018-08-31

    Applicant: BYD COMPANY LIMITED

    Inventor： Hongbin Luo ,  Chao Wang ,  Xiaofeng Shen ,  Qiuyong Zeng ,  Yuanhong Liu ,  Xiang Zhang

    IPC: H02J7/00 ,  B60L58/22 ,  B60L58/12

    Abstract: A battery equalization method includes: obtaining a voltage value of a to-be-equalized cell in a battery pack; obtaining a reference voltage value required for equalization; determining a target equalization duration of the to-be-equalized cell according to a voltage value of the to-be-equalized cell, the reference voltage value, and a preset equalization duty cycle, where the equalization duty cycle is a ratio of an equalization period in a unit cycle to the unit cycle, and the unit cycle includes the equalization period and a sampling period; and controlling equalization of the to-be-equalized cell in the equalization period in the unit cycle according to the target equalization duration. According to this method, sampling is separated from equalization in a unit cycle, thereby ensuring accuracy of collected battery information, making the calculated equalization duration relatively accurate, and improving equalization effects of the battery pack.

    Energy conversion device, power system and vehicle
    5.
    发明授权
    Energy conversion device, power system and vehicle 有权

    公开(公告)号：US11855543B2

    公开(公告)日：2023-12-26

    申请号：US17624055

    申请日：2020-06-18

    Applicant: BYD COMPANY LIMITED

    Inventor： Jingcui Teng ,  Shulin Liang ,  Yu Liu ,  Chao Wang

    IPC: H02M3/335

    CPC classification number: H02M3/33584 ,  H02M3/33571

    Abstract: An energy conversion apparatus includes: an inductor, where a first end of the inductor is connected to an external charging port; a bridge arm converter, connected between an external battery and the external charging port, where the bridge arm converter includes a first phase bridge arm, a second phase bridge arm, and a third phase bridge arm connected in parallel, and a second end of the inductor is connected to the first phase bridge arm; a voltage transformation unit, where an input end of the voltage transformation unit is connected to the second phase bridge arm and the third phase bridge arm; and a first bidirectional H-bridge, connected between an output end of the voltage transformation unit and the external battery. The external battery is connected to and drives an external motor. The external charging port is connected to a power supply and charges the external battery.

    Battery equalization system, vehicle, battery equalization method and storage medium
    6.
    发明授权
    Battery equalization system, vehicle, battery equalization method and storage medium 有权

    公开(公告)号：US11571981B2

    公开(公告)日：2023-02-07

    申请号：US16642816

    申请日：2018-08-31

    Applicant: BYD COMPANY LIMITED

    Inventor： Hongbin Luo ,  Chao Wang ,  Xiaofeng Shen ,  Chengzhi Wang ,  Qiuyong Zeng

    IPC: B60L53/62 ,  B60L58/13 ,  H02J7/00 ,  B60L58/22 ,  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.

    Vehicle and energy conversion device and power system thereof
    7.
    发明授权
    Vehicle and energy conversion device and power system thereof 有权

    公开(公告)号：US11865933B2

    公开(公告)日：2024-01-09

    申请号：US17624076

    申请日：2020-06-18

    Applicant: BYD COMPANY LIMITED

    Inventor： Jingcui Teng ,  Yu Liu ,  Shulin Liang ,  Chao Wang ,  Hongbin Luo

    IPC: B60L53/22 ,  H02J7/02 ,  H02P27/06 ,  H02M3/335

    CPC classification number: B60L53/22 ,  H02J7/02 ,  H02P27/06 ,  B60L2210/10 ,  B60L2210/30 ,  H02J2207/20 ,  H02M3/33584

    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 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.

    METHOD, UPPER COMPUTER AND SYSTEM FOR PROGRAMMING NODES IN A BUS NETWORK
    8.
    发明申请
    METHOD, UPPER COMPUTER AND SYSTEM FOR PROGRAMMING NODES IN A BUS NETWORK 有权
    方法，用于在总线网络中编程节点的上位计算机和系统

    公开(公告)号：US20150193362A1

    公开(公告)日：2015-07-09

    申请号：US14409467

    申请日：2013-06-21

    Applicant: BYD COMPANY LIMITED ,  SHENZHEN BYD AUTO R & D COMPANY LIMITED

    Inventor： Huan Xia ,  Junlin Gong ,  Xiaohua Tang ,  Xiaofeng Shen ,  Xinghui Wang ,  Chao Wang

    IPC: G06F13/28 ,  G06F13/40 ,  G06F13/42

    CPC classification number: G06F13/28 ,  G06F13/4027 ,  G06F13/4282 ,  H04L12/40169 ,  H04L41/082 ,  H04L43/0817 ,  H04L2012/40215 ,  H04L2012/40273

    Abstract: A method, an upper computer and a system for programming nodes in a bus network are provided. The method comprises: analyzing a program file to be programmed to obtain data of the program file and a storage address corresponding to the data; broadcasting a routing request message and receiving responding messages returned from a plurality of lower computers, each lower computer corresponding to one node in the bus network; analyzing the responding messages to obtain an operating state of each node among the plurality of layers of nodes; receiving a selected node to be programmed, activating the selected node and transmitting the data and the storage address to a single chip microcomputer corresponding to the selected node when the operating state of each node is a forwarding state; and storing corresponding to the selected node the data in a memory of the single chip microcomputer according to the storage address.

    Abstract translation: 提供了一种用于在总线网络中编程节点的方法，上位计算机和系统。 该方法包括：分析要编程的程序文件以获得程序文件的数据和对应于该数据的存储地址; 广播路由请求消息并接收从多个下位机返回的响应消息，每个下位机对应于总线网​​络中的一个节点; 分析所述响应消息以获得所述多个节点层中的每个节点的操作状态; 当每个节点的操作状态是转发状态时，接收要被编程的选定节点，激活所选择的节点并将数据和存储地址发送到与所选择的节点对应的单片微机; 并根据存储地址将与所选节点对应的数据存储在单片机的存储器中。

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