Automatic speed changing electric driven hub

Abstract

The invention discloses an automatic speed-change electrical wheel hub, comprising a left wheel hub frame, a right wheel hub frame, a housing, a motor, a transmission shaft, a wheel, a brake device arranged on the transmission shaft, and a self-adaptive two-speed automatic speed-change assembly driven by the motor rotor via a transmission device. The transmission device is arranged in the intracavity of the motor stator. The automatic speed-change electrical wheel hub has the advantages that the motor transmission device is arranged reasonably, the consumption of the manufacture materials of the housing is lowered, the whole wheel hub has a compact size and a light weight, the manufacturing cost is reduced, and the invention can enable the output power of the motor and the driving status of vehicles to always be in an optimum matching status to achieve the balancing control of the driving moment of the vehicles and the synthesized driving resistance; the speed change can be operated automatically along with the change of the driving resistance by the self adaptive without cutting off the driving force, so that the invention is beneficial to the energy-efficiency of the vehicles and the mechanical power equipment, and can satisfy the usage under the conditions of mountain areas, hills and heavy loads; and the transmission of the invention has a light weight and a compact structure.

Description

technical field [0001] The invention relates to a wheel hub of a motor vehicle or mechanical power equipment, in particular to an automatic variable speed electric wheel hub. Background technique [0002] In the prior art, the wheel hubs of electric motorcycles, electric bicycles and other electric vehicles are all designed with positions for installing motors, and are designed with a series of complicated transmission systems. Also increased the weight of wheel hub, therefore also increased the manufacturing cost of wheel hub, also increased power consumption. Furthermore, due to the consideration of reducing the bending of the wires to protect the wires when laying the power wires and signal wires, a larger space is required inside the cabinet, which also increases the volume of the cabinet and increases the manufacturing cost and weight. Electric vehicles such as existing electric motorcycles and electric bicycles basically all directly control the current control speed ...

AI Technical Summary

Problems solved by technology

However, this device does not have an automatic shift function

[0004]In the situation that the rider does not know the driving resistance, and only operates the speed change device based on experience, it is inevitable that there will be the following problems: 1. When the load is heavy, due to the increase of driving resistance, the motor speed is forced to drop to work in the low-efficiency area, causing the motor to stall, heat up, or even stop rotating when the battery increases the supply current.

2. Since there is no mechanical transmission to adjust the torque and speed, it can only be used in plain areas, and it cannot be used in mountainous, hilly and heavy-load conditions, which reduces the scope of use; 3. The installation space at the drive wheel is small, and it is very difficult to install the motor It is difficult to accommodate automatic transmission and other new technologies; 4. It does not have the function of self-adaptation, and cannot automatically detect, correct and eliminate the driver's operation errors; 5. When the vehicle speed changes suddenly, the motor will be in an unsteady state running, it will inevitably cause the motor power and driving resistance to be difficult to match

6. The continuation distance is short, the climbing ability is poor, and the adaptability range is small

[0005] Therefore, it is necessary to renovate the electric wheel hub, which can reduce the size and weight, require less space for installation, save manufacturing costs, reduce power consumption, and can effectively protect the wires and improve the service life of the wires. Adaptive changes with driving resistance Automatic gear shifting without cutting off the driving force, solving the problem that small torque-rotational speed changes cannot meet the problem of road use under complex conditions

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