The solution to the problem that Jianghuai charging pile can't lock the gun head is to operate the charging pile or key, click to start charging, and then click to stop charging after a while to lock the charging gun. Jianghuai charging pile has a key hanging at the end of the gun. Put the key head into the groove at the tail of the charging gun head and push it forward. After hearing a sound, the key can't be pushed, that is, the emergency locking of the gun head is completed.