Protective cover for generator in running state

    公开(公告)号:US11929656B1

    公开(公告)日:2024-03-12

    申请号:US18361730

    申请日:2023-07-28

    申请人: Jiacheng Ji

    发明人: Jiacheng Ji

    IPC分类号: H02K5/04 H02K5/00 H02K5/02

    CPC分类号: H02K5/04 H02K5/00 H02K5/02

    摘要: A protective cover for a generator in a running state includes a main body, a frame, and a top cover. The main body includes side wings capable of being rolled up and unfolded down. The side wings are enclosed to define an accommodating cavity. The accommodating cavity defines an upper opening and a lower opening and is matched with the generator. The frame is arranged in the accommodating cavity and is fixedly connected with the generator. The frame is fixed with the side wings. The top cover is openable and arranged on a top portion of the main body and covers the upper opening on an upper end of the accommodating cavity. When the generator is in the running state, the protective cover is used through the frame. Especially in a humid environment, the protective cover protects the generator from short circuit and protects an operator from electric shock.

    MOTOR CONTROL FOR GAS ENGINE REPLACEMENT DEVICE BASED ON BATTERY PACK CONFIGURATION DATA

    公开(公告)号:US20240063694A1

    公开(公告)日:2024-02-22

    申请号:US18500252

    申请日:2023-11-02

    摘要: A gas engine replacement device includes a housing, a battery receptacle coupled to the housing and configured to removably connect to a battery pack having a memory storing battery pack configuration data, a motor located within the housing, a power take-off shaft receiving torque from the motor and protruding from a side of the housing, a power switching network configured to selectively provide power from the battery pack to the motor, and a first electronic processor coupled to the power switching network and configured to control the power switching network to rotate the motor. The first electronic processor is configured to receive the battery pack configuration data responsive to a connection of the battery pack to the battery receptacle and control the power switching network based on the battery pack configuration data.

    Selectable current limiting for power tool

    公开(公告)号:US11811347B2

    公开(公告)日:2023-11-07

    申请号:US18175318

    申请日:2023-02-27

    CPC分类号: H02P27/08 H02K5/00 H02K11/27

    摘要: Selectable current limiting for a power tool. One embodiment provides a method for selectable current limiting for a power tool including determining, using a current sensor, an average current and determining whether the average current exceeds a predetermined current threshold. The method also includes determining a deviation of the average current from the predetermined current threshold and reducing a PWM duty ratio proportional to the deviation of the average current from the predetermined current threshold. The PWM duty ratio corresponds to a PWM signal provided to an inverter bridge.

    SELECTABLE CURRENT LIMITING FOR POWER TOOL
    8.
    发明公开

    公开(公告)号:US20230208338A1

    公开(公告)日:2023-06-29

    申请号:US18175318

    申请日:2023-02-27

    IPC分类号: H02P27/08 H02K5/00 H02K11/27

    CPC分类号: H02P27/08 H02K5/00 H02K11/27

    摘要: Selectable current limiting for a power tool. One embodiment provides a method for selectable current limiting for a power tool including determining, using a current sensor, an average current and determining whether the average current exceeds a predetermined current threshold. The method also includes determining a deviation of the average current from the predetermined current threshold and reducing a PWM duty ratio proportional to the deviation of the average current from the predetermined current threshold. The PWM duty ratio corresponds to a PWM signal provided to an inverter bridge.