The working principle of a brushless motor can still be imagined as a cylinder, but this time it is not a small round rod rotating in the middle, but a block of magnet rotating in the middle. The column wall is no longer the two magnetic poles of the magnet, but the "fan blade" that was just powered on. In this way, as soon as electricity is applied, the pillar wall will have magnetic poles due to the electromagnetic field, and a mutually exclusive force will be generated with the middle magnet. Then the magnet will spin wildly, and the electrical energy will be converted into kinetic energy. The difference between it and brushed motors is that we don't need to use those two brushes to power on, because we can directly power on the column wall.
The benefits of this are very obvious, because there is no friction between the brushes, so the speed is faster, the losses are reduced, the output power is greater, the lifespan of the motor is longer, and no sparks are generated. This is simply a blessing for some electrical appliances in flammable locations.