SYSTEMS AND METHODS FOR POWER TOOLS WITH ENHANCED MOTOR THERMAL PROTECTION

原文（中文）

A power tool is provided including a motor, an inverter that drives the motor, a sensor configured to sense a variable indicative of a motor temperature of the motor, a trigger, a power source, and a controller in communication with the inverter, the sensor, the trigger, and the power source. The controller is configured to apply power from the power source to the inverter to drive the motor at a requested effort level based on an amount of travel of the trigger when the trigger is depressed. The controller is further configured to reduce the requested effort level to the inverter when the motor temperature reaches a first temperature threshold, and shut down the motor when the motor temperature reaches a second temperature threshold.