Hot selling 26 inches electric bicycles

Past and present life of electric power assisted bicycle（5）

From its initial birth to now, Electric Bicycle in Japan use the "power assist system" with torque sensor as the core, which has changed for many generations and still maintains a leading position in the world; Germany's follow-up speed is very fast. At present, it can basically compare with Japan in technology. Of course, there are many views that Germany has surpassed Japan; After entering China, Electric Bicycle have embarked on another development path, because there are basically no enterprises to develop the core "power assist system", and it is too expensive to buy the system from Japan and Germany. Therefore, after more than 10 years of brutal growth, Nowadays, a large number of Electric Bikes For Adults wrapped with plastic decorations are shuttling through China's cities and villages, Ecotric Electric Bike has become a persistent disease of frequent traffic accidents. At present, such vehicles have been completely banned from the road in Beijing, Shanghai, Guangzhou, Shenzhen, Guangzhou and Shenzhen, and Beijing is also beginning to restrict them.

At present, Bafang and light passenger tsinova are among the few enterprises in China that can independently develop the power assist system. They have mastered the core torque sensor technology and corresponding algorithms. Bafang's central motor system has won a certain market share. The light passenger tsinova has also found another way to develop a more modular veloup smart power system. What is more noteworthy is that light passenger tsinova has made a breakthrough in the practicability of Internet big data. The developed system can collect users' riding data and conduct in-depth learning, which means that with the growth of individual users and the increase of overall users, light passenger's power assist system will become more and more intelligent, The provision of power assistance is no longer limited to a fixed proportion, but is matched according to the usage habits of individual users, reaching a new level in human-computer interaction, which solves the problem of low gear ratio power assistance not linear enough that has plagued Bosch, Yamaha and other enterprises for many years.

Although it is a category that has not received much attention, electric power assisted bicycles have also been developed in China. Because the R & D threshold of torque sensors and corresponding systems is too high, many alternative technologies have been born, mainly due to the replacement of sensors and realizable simplified algorithms. The more representative ones are rear axle claw sensors Torsion spring sensor and speed sensor, but these sensors are far from the torque sensor, so most of them are used for low-end electric power assisted bicycles. The rear axle claw sensor performs well, while the torsion spring sensor is unsatisfactory. Because the experience of speed sensor is too poor, only the lowest end products can be used.