The whole working process of wireless charging has many states, mainly including standby, identification, slow charging/fast charging, abnormal handling (reminder/limiting power/disconnecting energy transmission), full switching and other different states. The charger is in each state There will be different treatments.

 

Standby:

In standby mode, the wireless charger will work intermittently to identify whether a mobile phone is placed on the charger coil. Generally, it will work for tens of milliseconds within 1 second. If the transmitter has low power consumption processing, the average working time may be lower. Lower. That is, the charger coil enters the non-working state after tens of milliseconds. If an abnormality is identified, such as an abnormally large current or an abnormally high coil voltage, the charger will enter the abnormal processing state. If the charger receives the charging data of the mobile phone within these tens of milliseconds, it will enter the recognition phase. So cycle.

 

Recognition:

When the mobile phone is placed on the charger, the mobile phone will passively sense energy at the moment the charger is working. When the energy reaches a certain level, the mobile phone will send energy data to the charger (remember that the mobile phone sends data to the charger) to charge After receiving the energy data packet, the charger will continue to maintain the energy output. When the charger maintains the energy output, the mobile phone will continue to send charging data next, and the charger will enter the slow charging/fast charging recognition phase.

 

Slow/fast charge:</