LOCKING MECHANISM, BATTERY BRACKET, ELECTRIC VEHICLE, AND METHOD FOR LOCKING AND UN-LOCKING BATTERY PACK

Disclosed are a locking mechanism, a battery bracket, an electric vehicle, and a method for locking and unlocking a battery pack. The locking mechanism comprises a lock base and a lock tongue; the lock tongue is rotatably mounted on the lock base around a rotary shaft; the lock base is provided with an accommodating cavity; the lock tongue is rotated so that a lock shaft located within the accommodating cavity is in a locked state and an unlocked state. When the lock shaft moves in the accommodating cavity, the lock tongue may be driven to rotate downward, preventing the lock tongue from rotating upward and causing the lock shaft to convert into the unlocked state, and improving the reliability of fixing a battery pack.