18704283. POWER TOOL CONTROLLING FIELD WEAKENING (Milwaukee Electric Tool Corporation)
Contents
POWER TOOL CONTROLLING FIELD WEAKENING
Organization Name
Milwaukee Electric Tool Corporation
Inventor(s)
Ryan Khatib of Waukesha WI (US)
Mitchell A. Ellena of West Allis WI (US)
Jonathon R. Gasteiner of Brookfield WI (US)
Lokeshwaran Rajendran of West Allis WI (US)
Vincent Zornow of Milwaukee WI (US)
POWER TOOL CONTROLLING FIELD WEAKENING
This abstract first appeared for US patent application 18704283 titled 'POWER TOOL CONTROLLING FIELD WEAKENING
Original Abstract Submitted
A power tool that includes a housing, a brushless motor, a power switching circuit, and an electronic controller. The brushless motor is within the housing. The brushless motor includes a rotor and a stator. The rotor is coupled to a motor shaft arranged to rotate about a longitudinal axis. The motor shaft is arranged to produce a rotational output to a drive mechanism. The power switching circuit provides a supply of power from a battery pack to the brushless motor. The electronic controller is configured to determine a parameter associated with the battery pack, assign a classification to the battery pack based on the determined parameter, and control field weakening applied to the brushless motor based on the classification of the battery pack.
