Patent ID: 11958351
Assignee: SHANGHAI DIANBA NEW ENERGY TECHNOLOGY CO., LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 6:
7. An unlocking method for unlocking a locking device that mounts a battery to a fixing seat of an electric vehicle, wherein the locking device comprises:
a lock base configured to provide a locking position, and comprising a lock body having a surface provided with a lock groove recessed towards the inside of the lock body, the lock body being provided with a lock tongue groove and a lock tongue movably mounted in the lock tongue groove, and the lock tongue groove being in connection with the lock groove;
a lock connecting rod movably connected with the lock base through the lock tongue, and configured to control lock tongues of a plurality of lock bases simultaneously and perform synchronous locking of the plurality of lock bases, wherein the lock connecting rod comprises a rod member, and a second positioning steel magnet is mounted on the rod member; and
a lock shaft comprising a shaft rod, the shaft rod being configured to be inserted into the lock groove of the lock base to perform unlocking and locking,
wherein the unlocking method comprises:
making an unlocking device on a battery-changing mobile platform contact the lock connecting rod and push the lock connecting rod to rise, so that the lock tongue leaves the lock groove; and
moving the battery to withdraw the shaft rod from the lock groove, and completing a battery removal process; and
wherein during rise of the lock connecting rod, the rod member is moved, and the second positioning steel magnet stays at or passes through a sensing device provided on a moving track of the second positioning steel magnet to determine whether the lock connecting rod is currently in the unlocked state or in the locked state.