Motor type
A common electric power system is divided into a middle motor and hub motor according to the motor position.
In the electric power-assisted mountain bike, the middle-mounted motor layout with a lower center of gravity is usually used to obtain a center and reasonable weight distribution, which will not affect the balance of the vehicle under fast driving, to obtain good handling. In addition, the auxiliary power of the middle motor is directly applied to the central shaft, and the internal clutch transmission gear is often used, which can automatically connect the motor and the transmission system off when the battery is not trampled or without power, so it will not cause additional resistance.
In urban commuter cars, bicycles are not too much manipulated, the road conditions are not as complex as in the mountains, and the need for climbing hills is not so large, so the rear hub motors like the H700 system are equally effective.
In addition, the advantage of the hub motor does not change the original frame axle five structure, does not have to open mold frame, the traditional frame matching degree, and power directly act on the wheels, effectively reducing the drive wear, in addition as micro hub motor can do and native bicycle almost similar appearance, this is the international big electric power highway car choose one of the important factors of the hub motor system.
Torque size
In terms of cycling environments, electric booster mountain bikes require a motor of higher torque output, usually using torque sensors to accurately detect the cyclist’s intentions, and can more easily rise in steep, complex off-road climbs even at low tread frequency.
Therefore, the torque output of electric booster mountain bike motors is usually between 60Nm and 85Nm. The M600 drive system is rated at 500W and has a torque output of up to 120Nm to maintain strong power throughout mountain cycling.
The electric power system designed for the highway pays more attention to the smooth performance of the pedal rhythm and the smooth and gradual performance of the motor assistance, because the power adjustment will be different, and the smooth pedal under high-speed cruise does not need too high power intervention, so the motor torque output is generally not too large. The M820 medium electric power system was specially developed for road vehicles, the motor only weighs 2.3 kg, but can output 250W rated power, with a maximum output torque of 75N.m。The fang H700 hub motor has 32Nm of torque, easily ensuring strong performance in daily commuting and casual use.
If you want to ride the electric power on a quick trip, the higher the total weight of the vehicle with full equipment, the harder it is to maintain sustained power output while climbing, and therefore the greater the need for torque.
It’s also not that the greater the torque, the better, too much torque output reduces the human stampede effort, and becomes more difficult to control on bumpy roads. When the motor is always equipped with 300% auxiliary power output, too easy riding is boring.
Instrument selection
An HD color display screen can display motor-related data, including the battery remaining power percentage, cycling distance, altitude, sports mode, current speed, and other rich information, which can meet our daily outing leisure cycling. Of course, our instrument requirements are naturally different in different cycling scenarios. Mountain cycling road conditions are complex, slowly shifting from large-screen meters to integrated meters.
Road cars pay great attention to wind resistance, weight, and other factors, just like the enduring 530-yard meter on the market, the volume and weight are always important factors that road cars need to consider.
Under the trend of a new generation of electric power commuter car, the simple and easy-to-use embedded instrument is becoming the trend of a high-end car, embedded in tube instrument keys only by light color to indicate battery, gear information, greatly simplified the electric power display information, at the same time simple appearance and comfortable linear auxiliary power refresh the city commuting outing riding experience.
Battery capacity
The biggest weight ratio of the electric power bicycle is undoubtedly the battery. The battery has experienced a rough and brutal plug type slowly transitioning to an introverted and simple embedded direction. The battery embedded in the lower tube is a common installation method of electric power. A further solution will hide the battery completely in the frame, with a stable structure and a cleaner appearance, and can reduce the weight of the vehicle.
Long-distance crossing models of the battery demand is longer range, full shock absorbers mountain bike is more concerned about strong power output, these need large capacity battery support, but larger and heavier batteries will take up more space and need higher frame strength, so the weight of these types of electric moped models is often not too light. The 750Wh and 900Wh batteries are becoming the new benchmarks for such models.
Highway, commuting, city, and other models to pursue the balance of performance and lightweight, will not blindly increase the battery, 400Wh-500Wh is a common battery capacity, the range can usually reach about 70-90 kilometers.
Motor, performance, battery capacity, meters and so on the above basic knowledge you know almost, you can choose the right electric power bicycle according to their own daily cycling needs! What else do you want to know about electric power?
From: BIKETO.COM
