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Electric vehicle motor stall protection device and protection method thereof

A protection device and motor protection technology, applied in emergency protection circuit devices, electromechanical devices, electric vehicles, etc., can solve the problems of reducing the strength of the rotating shaft, affecting driving safety, and wearing the surface of the rotating shaft, so as to reduce wear and improve flexibility.

Active Publication Date: 2021-06-04
常州市武进金顺机电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The stall protection device of the electric vehicle motor in the above-mentioned patent adopts the speed limit of the rotating shaft, which is easy to wear the surface of the rotating shaft, reduces the strength of the rotating shaft, and affects the subsequent driving safety

Method used

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  • Electric vehicle motor stall protection device and protection method thereof
  • Electric vehicle motor stall protection device and protection method thereof
  • Electric vehicle motor stall protection device and protection method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A motor stall protection device for an electric vehicle, such as Figure 1-8 As shown, it includes a motor box 1; the inner wall on one side of the motor box 1 is connected with a drive motor 11 by bolts; the outer wall on one side of the output shaft of the drive motor 11 is connected with a coupling 12 by bolts; the outer wall on one side of the coupling 12 is passed through The bolt is connected with the driving coupling shaft 7; the outer wall of the driving coupling shaft 7 is processed with a keyway 35; the inner wall of the keyway 35 side is placed with a fixed key 34; the outer wall of the driving coupling shaft 7 is fixedly connected with the bearing link 10; Keyholes 22 are processed; the outer wall of one side of the motor box 1 is fixedly connected with a motor protection plate 2 by screws; the inner wall of both sides of the motor protection plate 2 is processed with electromagnetic grooves 29; the inner wall of one side of the electromagnetic groove 29 is f...

Embodiment 2

[0047] A protection method for an electric vehicle motor stall protection device, such as Figure 7 shown, including the following steps:

[0048] S1: the electromagnetic slot 29 is powered on, the displacement sensor 14 is turned on, and the driving motor 11 is turned on;

[0049] S2: comparing the moving distance of the moving connecting rod 8 measured by the displacement sensor 14 with the rotational speed of the driving motor 11 controlled manually;

[0050] S3: If the comparison is normal, repeat S2. If the comparison result shows that the motor stalls, then go to S4. If the comparison result shows that the motor stalls seriously, go to S5;

[0051] S4: the electromagnetic slot 29 stops electrifying;

[0052] S5: The brake cylinder 4 operates.

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Abstract

The invention discloses an electric vehicle motor stall protection device and a protection method thereof, and relates to the technical field of motor stall protection. The problems that during motor stall protection, damage to a rotating shaft is large, and follow-up driving safety is affected are solved. The motor stall protection device of the electric vehicle comprises a motor box, and the inner wall of one side of the motor box is connected with a driving motor through bolts; the outer wall of one side of the output shaft of the driving motor is connected with a coupler through bolts. The protection method of the motor stall protection device of the electric vehicle comprises the steps that an electromagnetic groove is powered on, a displacement sensor is started, and the driving motor runs. By arranging a bearing connecting ring, a hollow base, a telescopic spring, a telescopic connecting rod, a fixed connecting plate, an arc-shaped speed reducing plate and a friction layer, the friction layer conducts friction speed reduction on the bearing connecting ring on the driving connecting shaft when the driving motor stalls, and the friction layer on the arc-shaped speed reducing plate is prevented from making direct contact with the driving connecting shaft, so that subsequent driving is prevented from being affected by damage of the driving connecting shaft.

Description

technical field [0001] The invention relates to the technical field of motor stall protection, in particular to an electric vehicle motor stall protection device and a protection method thereof. Background technique [0002] Electric vehicles, that is, electric drive vehicles, have another name called electric drive vehicles. Electric vehicles are divided into AC electric vehicles and DC electric vehicles. Generally speaking, electric vehicles use batteries as energy sources. Through controllers, motors and other components, electric energy is converted into mechanical energy movement to control the current and change the speed of the vehicle. In the daily driving process Among them, electric vehicles are easy to lose control, which is generally due to motor stall. Motor stall refers to motor stall, and motor stall is the performance of motor speed loss of control. At present, in the prior art, the motor stall protection of electric vehicles generally adopts countershaft pro...

Claims

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Application Information

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IPC IPC(8): H02K7/102H02K11/20H02H7/093
CPCH02K7/1021H02K11/20H02H7/093Y02T10/64
Inventor 刘彦倪锦良
Owner 常州市武进金顺机电有限公司
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