Hub motor with built-in torque sensor

Abstract

The invention discloses a hub motor with a built-in torque sensor. The hub motor comprises a motor body and a torque sensing box, an end cover front panel is installed on the front face of the motor body, the torque sensing box is installed on the front face of the end cover front panel, and a transmission rod is installed in an extrusion rotating wheel in a penetrating mode. A heat dissipation explosion-proof box is installed on the surface of the motor body, a sealing heat insulation module is installed on the front face of the transmission rod, two sets of winding columns which are symmetrically arranged are installed on the surface of the motor body, and two sets of correction boxes which are symmetrically arranged are installed on the surface of the rotor assembly. By installing a torque sensing box, a deformation stress block, a deformation resistance block, a first pressure sensor and a second pressure sensor, when the bicycle is started by riding from a static state or encounters resistance in the riding process, the power output of the motor is continuously adjusted and controlled according to the magnitude of the pedaling force of a rider through combination of real-time dynamic detection, and therefore, a rider is assisted to ride in a more labor-saving manner.

Description

technical field [0001] The invention relates to the technical field of electromagnetic geared motors, in particular to a hub motor with a built-in torque sensor. Background technique [0002] With the development of intelligent travel, electric power-assisted bicycles are more and more popular. In order to realize the organic combination of human riding and motor power, the industry is generally beginning to pay attention to the combination of torque sensors and motor control systems. The present invention is a torque sensor And the motor control system provides a new way --- hub motor with built-in torque sensor. [0003] The defects that existing wheel hub motors exist are: [0004] 1. The comparative document CN207082972U discloses a wheel hub motor and a hub motor system, "The hub motor includes a fixed seat, a driving wheel and an encoding module; the driving wheel is connected to the fixing seat through a wheel shaft; the encoding module is fixedly arranged on the fix...

AI Technical Summary

Problems solved by technology

The overall structure of the present invention forms a box-shaped or semi-box-shaped structure, and the stator shell and the rotor shell are provided with a rib structure, which has the characteristics of high strength, high rigidity, and light weight, and greatly reduces the overall vehicle weight while meeting the strength and stiffness of the hub motor. Unsprung quality, low cost, high reliability and redundancy, good heat dissipation and sealing, strong anti-vibration and shock resistance, good motor unit performance, improved power density, and adapt to the high demands of electric vehicles and large special electric vehicles High power and high torque requirements", the in-wheel motor adopts a circulating water cooling structure to cool down and dissipate heat, but water penetration accidents are prone to occur, which affects the normal operation of the motor;

[0006] 3. The comparative document CN210142953U discloses a heat-insulated hub motor and a vehicle equipped with the heat-insulated hub motor, "comprising: a brake device, a heat shield and a hub motor; the heat shield is arranged between the brake device and the hub motor between, and the heat shield is fixedly connected with the brake device and the hub motor respectively; a gap is provided between the brake device and the heat shield; the heat shield is suitable for blocking the heat generated by the brake device The heat is transferred to the hub motor to prevent the demagnetization of the hub motor due to the heat generated by the brake, which prevents the heat from being transferred to the inside of the motor through the heat shield when it is used, but it fails to realize the internal heat of the motor. The transfer to the outside leads to the lack of a corresponding heat dissipation structure for the internal heat of the motor, which affects the safety of the motor and cannot guarantee the normal operation of the motor;

The brake ring and the motor body are integrated to reduce the influence of external factors, there is no abnormal sound, the structure is simple, the cost is low, and the installation and replacement of the brake device are more convenient." However, this device lacks corresponding functions when braking. The signal reminder device of the vehicle body with the hub motor is prone to speeding and extreme braking accidents when driving on a downhill section, which affects riding safety

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