Auto-adaptive driving and sensing device for electric motorcycle

Abstract

The invention relates to a self-adaptive transmission sensor of electric motorcycle, which comprises a back circular rim, a chain wheel, and a back wheel axle. Wherein, the back circular rim is connected to the big sheath cylinder. It is characterized in that: the chain wheel has an arc rib groove which contains a roller wheel; the big sheath cylinder has a needle bearing the left end of whose inner ring is connected to left rotational end-face cam while the right end is connected to the chain wheel; the spring sheath cylinder has a spring, a first displacement pushing plate and a right end-face cam outside it; the right end-face cam is matched with left rotational end-face cam; the left semi-cylinder axle of back wheel axle has a displacement sensor whose top needle clings the second displacement pushing plate; and the back circular rim has a sensing element relative to the speed sensor. The invention is mounted on the terminal of drive system with accurate attained signal, high accuracy, and it can supply reliable base to intelligent drive with mechanical self-adaptive property.

Description

technical field [0001] The invention relates to motorcycle components, in particular to an adaptive transmission sensor device for electric motorcycles. Background technique [0002] Most of the existing electric motorcycles are equipped with a controller for controlling the operation of the electric motor, and the general controller controls the operation of the electric motor according to the human operation of the driver. This type of controller has large additional slip loss, low efficiency, and narrow speed regulation range, especially for low-speed low-load, low-speed high-load, frequent start and stop operations, which will cause a lot of loss to the motor, and the operating efficiency is extremely low. This type of controller directly adjusts the current and voltage through the handle according to the driver's human operation instructions, and controls the motor to work. The various commands issued by the driver are often directly contrary to the operating condition...

AI Technical Summary

Problems solved by technology

The various commands issued by the driver are often directly contrary to the operating condition characteristics of the motor speed and the best efficiency range, and also do not conform to the electrochemical discharge characteristics of the battery. Judging the operation only based on one's own experience, because it is impossible for people to accurately It is impossible to judge and grasp the speed and load change relationship of electric vehicles under various complex working conditions in a timely manner. Accurate and appropriate operation for downhill and transitional changes

Therefore, this kind of control relying solely on human operation is often inaccurate and sometimes even wrong

This is the main reason for the low efficiency and high repair rate of existing electric vehicle motors, and it is also an important factor that causes excessive current and deep discharge of the battery and shortens the service life of the motor and battery

For example, when going uphill or against the wind, the driver hopes that the vehicle speed will not decrease and increase the input voltage, but because the resistance increases when going uphill or against the wind, the torque will also increase, and the current will continue to increase with the increase of the torque. When the normal efficiency range is exceeded, the current continues to increase, and the motor torque, speed and efficiency decrease continuously at the same time, but the current output by the battery is still increasing with the increase of the load. At this time, the efficiency drops sharply, the reactive power loss is serious, and even Exceeding the rated power and limit power of the motor will cause the motor to block, heat up, burn out or be damaged

At the same time, due to the continuous excessive and deep high-current discharge of the battery, the damage to the battery is further aggravated, and its service life is greatly shortened.

[0003] Problems in the drive system: the hub motors are installed in the center of the rear wheel, so many practical and new technologies cannot be integrated into the drive system, especially without fuel motorcycles The deceleration and torque-increasing transmission function of the most critical mechanical transmission system of the car completely depends on the electric power generated by the battery capacity to overcome the load and resistance, which can easily cause damage to the battery and motor

This is one of the most important factors affecting the riding comfort and acceleration of electric motorcycles (except batteries), which greatly reduces and weakens the functions and scope of use of electric motorcycles, making it difficult for electric motorcycles to compete with similar fuel motorcycles. Compared with the car, and the maintenance is difficult and the cost is high

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