Abstract: A chainless hybrid electric bicycle includes a bicycle body. A generator, a battery pack, a driving motor and a manual switch are mounted on the bicycle body. The generator is coaxially mounted with the pedal transmission unit, so that the generator generates an electric power when the rider works the pedals. The battery pack is electrically connected to the generator for storing the electric power generated by the generator. The driving motor drives the wheels of the bicycle body to run. The rider selects the electric power from the generator or the battery pack through the manual switch to drive the driving motor to run, which in turn drives the bicycle body to move forward. The chainless hybrid electric bicycle has the advantage of a hybrid power drive system, without using traditional mechanical transmission components such as chains and chainrings.

Abstract: A vibration self-generating battery of a water quality low-power sensor applicable to multiple scenarios, belonging to the technical field of self-generating energy supply. The battery includes a positive electrode magnetic cap, a battery outer cylinder, a negative electrode magnetic cap, a circuit module, a supporting component, an electromagnetic induction generating unit, and a friction nano generating unit. The positive electrode magnetic cap is arranged on the upper side of the battery outer cylinder, and the negative electrode magnetic cap is arranged at the lower side of the battery outer cylinder. The friction nano generating unit is arranged close to an inner wall of the battery outer cylinder. The electromagnetic induction generating unit is arranged at the center of the battery, and the supporting component and the circuit module are arranged below the electromagnetic induction generating unit in turn.