Mobile phone charger can be roughly divided into travel charger, seat charger, USB charger and maintenance charger


      Mobile phone charger design：

Working mechanism：When the battery is charged, the lithium in the cathode material is dissolved out and embedded into the modified graphite layer of the negative electrode; when the battery is discharged, the lithium ion is de embedded from the graphite layer and backfilled into the layered structure of the cathode lithium cobalt oxide through the isolation membrane. With the progress of charging and discharging, lithium ion is constantly embedded and detached from the positive and negative electrode, so it is also called "rocking chair battery". The rated voltage of lithium-ion battery is 3.6V, the charging limiting voltage is 4.2V, and the discharge limiting voltage is 2.5V.

TVS transient suppression diode：

Rectifier diode & Bridge：