Looking at the excellent electric bicycles on the market in recent years, the integration of the battery, motor, controller, and sensor is very simple and reasonable: the battery is generally integrated in the down tube, and the motor, controller, and sensor are integrated at the bottom. This structure, located on the central axis, is called a "mid-drive motor".
Mid-drive motors for bicycles are more efficient than wheel hub motors. This makes it easier for you to climb hills and ride off-road with these motors. Since the mid-drive motor is part of the power transmission system, it is utilizing it. As a result, your pedaling effort becomes more effective. This provides you with greater torque, which provides additional power. This makes mid-drive motors better than wheel hub motors in demanding conditions, such as going uphill or carrying cargo. The integration within the power transmission system also means that mid-drive motors for bicycles work together with the gears. Making the performance of the bicycle more efficient and responsive.
If you have a mid-drive motor for bicycles, removing or replacing the wheel and tire will no longer be so frustrating. This makes sense because mid-drive motors are not connected to the wheel like wheel hub motors. If you have a flat tire or a damaged wheel, or even if you want to switch to a different type of tire, this will make your life easier. For example, if you want to switch from thinner tires to thicker ones for off-road riding.
Mid-drive motors for bicycles collect power signals on the pedals, and then work with components such as clutches, drive shafts, and differentials to apply the output kinetic energy to the crankset, assisting the rider in pedaling. For some world-renowned mid-drive motor manufacturers, the conversion rate from electrical energy to kinetic energy is generally above 90%. In the absence of battery power supply, mid-drive motors for bicycles are completely separated from the central axis and have no magnetic resistance. Therefore, even when the battery is depleted, you can still ride smoothly and unimpededly. The integration degree of mid-drive motors for bicycles is very high and can generally reach IP65 or higher protection level, which can resist dust intrusion and water spraying at any angle.