电动工具碳刷是用于有刷电机的重要部件，主要功能是传导电流、实现换向，并减少机械磨损‌,电动工具主要包括角磨机、电钻、电锤以及园艺工具

Power tool brushes are critical components in brushed motors, primarily serving to conduct current, facilitate commutation, and reduce mechanical wear. Common applications include angle grinders, electric drills, electric hammers, and garden tools.