公开(公告)号：US20230411978A1

公开(公告)日：2023-12-21

申请号：US17842955

申请日：2022-06-17

申请人： Black & Decker Inc.

发明人： Mehdi RAMEZANI

IPC分类号： H02J7/00 ,  H02P6/16 ,  H02K5/04 ,  H02K11/00 ,  B25F5/00

CPC分类号： H02J7/0048 ,  H02J7/00711 ,  H02P6/16 ,  H02K5/04 ,  H02K11/0094 ,  B25F5/00 ,  H02M7/53871

摘要： A power tool is provided including: a housing including a battery receiving portion configured to receive a removeable power tool battery pack and a motor housing; a brushless direct-current (BLDC) motor disposed within the motor housing, the motor including a stator and a rotor; a power switch circuit disposed between the battery receiving portion and the motor; and a controller that controls a switching operation of the power switch circuit to regulate a supply of power from the battery pack to the motor. At tool start-up, the applies a series of voltage pulses to the motor and measures a corresponding series of motor phase current values to identify an initial position of the rotor relative to the stator. Further, the controller identifies at least one of an impedance or a capacity of the battery pack as a function of the motor phase current values.

公开(公告)号：US20240356354A1

公开(公告)日：2024-10-24

申请号：US18758939

申请日：2024-06-28

申请人： Black & Decker Inc.

发明人： Mehdi RAMEZANI

IPC分类号： H02J7/00 ,  B25F5/00 ,  H02K5/04 ,  H02K11/00 ,  H02M7/5387 ,  H02P6/16

CPC分类号： H02J7/0048 ,  B25F5/00 ,  H02J7/00711 ,  H02K5/04 ,  H02K11/0094 ,  H02P6/16 ,  H02M7/53871

摘要： A power tool is provided including: a housing including a battery receiving portion configured to receive a removeable power tool battery pack and a motor housing; a brushless direct-current (BLDC) motor disposed within the motor housing, the motor including a stator and a rotor; a power switch circuit disposed between the battery receiving portion and the motor; and a controller that controls a switching operation of the power switch circuit to regulate a supply of power from the battery pack to the motor. At tool start-up, the applies a series of voltage pulses to the motor and measures a corresponding series of motor phase current values to identify an initial position of the rotor relative to the stator. Further, the controller identifies at least one of an impedance or a capacity of the battery pack as a function of the motor phase current values.

公开(公告)号：US20220255479A1

公开(公告)日：2022-08-11

申请号：US17731997

申请日：2022-04-28

申请人： Black & Decker Inc.

发明人： Girish YAJURVEDI ,  Mehdi RAMEZANI ,  Michael K. Forster ,  John C. VANKO ,  Tal GOTTESMAN ,  Levent GOKDERE

IPC分类号： H02P21/10 ,  H02P21/18 ,  H02P21/22 ,  H02P21/36 ,  B25F5/02 ,  H02P21/00 ,  H02P21/13 ,  H02P27/12 ,  H02P21/34

摘要： A power tool is provided including a housing, a brushless motor disposed within the housing, a power switch circuit that supplies power from a power source to the brushless motor, and a controller configured to apply a drive signal to the power switch circuit to control the supply of power to the brushless motor. The controller is configured to receive at least one signal associated with a phase current of the motor, detect an angular position of the rotor based on the phase current of the motor within a variable speed range of zero to at least 15,000 rotations-per-minute (RPM), and control the drive signal based on the detected angular position of the rotor to electronically commutate the motor within a power output of zero to at least 1500 watts.