Liquid cooling auto-excitation-type eddy current retarder without electric brush structure

Abstract

A self-excited eddy current liquid-cooled retarder is disclosed. The retarder pertains to an auxiliary braking device retarding a vehicle, and comprises a retarder rotor, a retarder stator, a control module and a generator unit. The retarder rotor comprises a retarder coil, an electromagnet core and a core cage. The retarder coil is wound on a coil frame. The electromagnet core is inserted into the coil frame. The electromagnet core, the retarder coil and the coil frame are evenly distributed on the circumference of the core cage. The retarder rotor is connected to a transmission shaft of an automobile. The inner circle of the retarder stator and the outer circle of the electromagnet core of the retarder rotor are coaxial. The generator unit comprises a generator exciting winding, a generator exciting magnetic pole, a generator armature winding and a generator armature core and is received in the retarder rotor.

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 torque and continuous braking of the self-excited retarder. moving time

The invention patent titled "a self-excited retarder with a water cooling system" (patent application number 200810243194.2) discloses a self-excited retarder that uses water cooling to dissipate heat. Although it solves the problem of heat dissipation, the structure must There is a brush device to transmit the power on the generator stator armature to the rotating retarder rotor coil, so it has the disadvantage of low life

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