Electronic lock control signal: the electronic lock has two signal input terminals, and the corresponding control signal is given to the two signal input terminals to realize the locking and unlocking of the electronic lock. When input a certain voltage forward pulse to the electronic lock, the electronic lock locks; The electronic lock is unlocked when a reverse pulse of a certain voltage is input to the electronic lock.

Unlock logic: After receiving the unlock request, the charging system will first determine whether the vehicle is charging. If the vehicle is not charging, you can directly drive the charging gun electronic lock to unlock it. After receiving the user's request for active unlocking, and the charging system will unlock the charging gun electronic lock, if the user does not pull the gun within 2 minutes, the electronic lock will be re-locked to ensure safety.

Emergency automatic unlocking: In case of accidental power failure of the charging pile, the supercapacitor module provides power and continuously drives the electronic lock to unlock until the feedback signal of the electronic lock is low, that is, the unlocked state, to ensure that the charging gun can be safely pulled out.

Control circuit design: The high security DC charging gun electronic lock control circuit includes lock comparison module, latch module, lock driver module, unlock driver module and BMS main control chip. These modules work together to ensure that the electronic lock reliably locks and unlocks in a variety of situations.


To sum up, the unlocking process of the electronic locking mechanism of the DC charging gun head is a complex process involving multiple components and logical judgment, which ensures that the charging gun can be safely and reliably pulled out of the vehicle charging interface after charging is completed or in an emergency.