A liquid-cooled self-exciting eddy current retarder with brushless structure

Abstract

The invention provides a liquid cooling auto-excitation-type eddy current retarder without an electric brush structure and belongs to an auxiliary braking device for retarding a vehicle. The eddy current retarder provided by the invention comprises a retarder rotor, a retarder stator, a control module and a generator device, wherein the retarder rotor consists of a retarder coil, an electromagnetcore and a core retainer; the retarder coil is wound on a coil frame, and the electromagnet core is inserted into the coil frame; the electromagnet core, the retarder coil and the coil frame are uniformly distributed on the circumference of the core retainer; the retarder rotor is connected with a transmission shaft, and the inner circle of the retarder stator and the excircle of the electromagnetic core of the retarder rotor are coaxial; and the generator device comprises a generator exciting winding, a generator excitation magnetic pole, a generator armature winding and a generator armaturecore and positioned in the retarder rotor. Compared with the traditional eddy current retarder, the eddy current retarder provided by the invention has the advantages of better safety, high reliability, no need of maintenance, compact overall structure, small volume and weight, and easiness for realization of intelligent control on the brake torque and constant-speed cruising of the retarder.

Description

technical field [0001] The invention relates to an automobile retarder, in particular to a self-excited eddy current retarder utilizing liquid cooling to dissipate heat, belonging to an auxiliary braking device for decelerating a vehicle. Background technique [0002] The retarder is a safety auxiliary device for driving brakes, which applies the braking force to the transmission parts of the vehicle to reduce the driving speed of the vehicle. At present, the most widely used retarder in our country is the eddy current retarder, which uses the principle of electromagnetism to convert the kinetic energy of the car into heat energy, and dissipates it through air cooling. The eddy current retarder can improve the braking performance of the car, eliminate the traditional braking noise and environmental pollution, prolong the service life of the brake pads and tires, and greatly improve the safety, comfort and economy of the car. Although the eddy current retarder has the advant...

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Problems solved by technology

[0004] Invention patent (patent application No. 201010516737.0) titled "a double-rotor disc self-excited retarder and its control method" and a utility model patent titled "vehicle retarder with self-generating power" (patent application No. The self-excited retarder disclosed in 201020205726.6) adopts air-cooled heat dissipation method, which cannot effectively dissipate the heat generated on the eddy current induction body of the retarder, which limits the improvement of the braking torq

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