Many electric bicycle users have encountered this phenomenon: electric bicycle ride a year or two to become "flabby", even if fully charged also not far. Everyone may speculate that this is a problem with the battery, in fact, the front drive geared electric bicycle motor is also an important reason for the above phenomenon.
Generally installed in the rear wheel of the electric bicycle, its role is to convert the battery inside the stored electrical energy into kinetic energy, let the rear wheel turn, and then drive the electric bicycle to run. It can be said that the motor is like the "heart" of the electric bicycle, the motor can be stable and powerful "beating", the electric bicycle running up powerful.
Important as the electric bicycle "heart" of the front drive geared electric bicycle motor, but it is difficult to escape the torture of disease, the market a lot of electric bicycles used for a year or two, dismantling their motors will find that the inside has been rusty, just like the heart of the elderly, has long been overwhelmed, at any time face "myocardial infarction "The danger of.
The reason for this is to mention the "high temperature" and "water" these two factors lead to the demagnetization of the front drive geared electric bicycle motor.
Front drive geared electric bicycle motor internal like a thermos, the middle is air, long time or high load work will make the motor internal generate a lot of heat, the internal temperature rises sharply, which will produce two consequences. First, the temperature is too high will make the motor demagnetization, the front drive geared electric bicycle motor efficiency will drop. Second, the motor will stop working after the temperature will fall, the temperature change leads to internal air thermal expansion and contraction to form a pressure difference, external water vapor, dust through a variety of tiny gaps are pressed into the motor. It is easy to get in and difficult to get out, and over the years, the accumulation of water inside the motor will appear. This is also to explain the confusion of many people - the current motor sealing performance is very good or I never ride in the water, but there is still the phenomenon of water. The phenomenon of negative pressure water absorption is difficult to avoid, so the full seal can not completely solve the problem of water in the motor. The permanent magnet material of the motor contains iron, high temperature, and high humidity environment, is a hotbed of oxidation and rust, the magnets are also demagnetized. So high temperature and water will eventually lead to the demagnetization of the front drive geared electric bicycle motor.
High temperature and high humidity lead to the demagnetization of the front drive geared electric bicycle motor, and the outward manifestation in the use of electric vehicles is a decrease in power and fast power consumption. It takes more energy to climb the same slope, and even affects battery life. So how can we make the heart of electric bicycle "motor" stay young forever?
So how exactly do we solve the problem of demagnetization of the front drive geared electric bicycle motor? When the front drive geared electric bicycle motor is rotating, the anti-rust heat-conducting oil is attached to the permanent magnet to form an oxidation-insulating oil film to prevent oxidation and rusting. At the same time, the heat conduction of oil is much better than air, so it is easy to disperse the high temperature inside the motor through the electric vehicle hub and shell, reducing the working temperature of the motor. In addition, the motor's unique gas exchange system can absorb the moisture in the air entering the motor, with the use of seals, to achieve multiple waterproof, to ensure that the motor will not enter the water rust. Accordingly, the two major problems of water ingress and high temperature are solved.