The principle of wireless induction charging of electric toothbrush is the use of electromagnetic induction phenomenon, the charging base built in a coil to generate a weak electromagnetic field, the bottom of the toothbrush is also installed as a receiver, forming a magnetic coupling between the two coils, thereby transferring electrical energy.
When the bottom of the toothbrush receives a signal from the charging base, the electricity is transferred to the battery inside the toothbrush for charging. This wireless inductive charging technology is convenient and practical, avoids the trouble of charging the toothbrush plug line, and also effectively reduces the safety risks in the use of electrical appliances.