Abstract: A foldable electric bicycle includes a foldable body, a first sensing object, a motor, a motor controller, and a first sensor. The foldable body includes a first frame, a second frame, and a latch. The first frame is foldably connected to the second frame to make the first frame operably unfolded to a safe state or folded to a folded state relative to the second frame. The first sensing object is disposed on the latch. The latch is disposed on the second frame. The first sensor is disposed on the first frame. When the first sensor cannot sense the first sensing object, the motor controller turns off the motor.

Abstract: An electric bicycle assistance controlling method and an assistance controlling system are applied to an operation processor of an electric bicycle. The electric bicycle assistance controlling method includes defining several health levels and a first power interval and a second power interval, acquiring one health level and a target heart rate interval, and measuring a current human power and a current heart rate. When the current heart rate is within the target heart rate interval, the operation processor determines the assistance controlling system to output a second motor assistance in response to the current human power inside the first power interval, and determines the assistance controlling system to output a third motor assistance in response to the current human power inside the second power interval.

Abstract: An electronic lock includes a casing, a locking component, an actuating component, a pushing component, a contacting component and an electric motor. The locking component can be switched between a lock position and an unlock position, and has a first inclined portion. The actuating component has a second inclined portion slidably abutting against the first inclined portion. The pushing component is connected to the actuating component and protrudes from the casing. The pushing component is pressed by an external force to move the locking component from the unlock position to the lock position via a relative movement between the first inclined portion and the second inclined portion. The contacting component movably contacts against the actuating component to constrain the locking component in the lock position. The electric motor is connected to the contacting component, and can separate the contacting component from the actuating component by a control command.