Liquid cooling self-excitation type eddy current retarder with salient pole structure

Abstract

The invention provides a liquid cooling self-excitation type eddy current retarder with a salient pole structure, belonging to the field of automobile braking. The liquid cooling self-excitation type eddy current retarder comprises a retarder rotor (9), a retarder stator (5), a retarder coil (8), a retarder generator and a control module, wherein the retarder rotor (9) is a tooth-shaped rotary plate; the axial half-section of the tooth-shaped rotary plate is a reverse h shape; two bulges at the both sides of a dentate disc are two salient poles of the retarder rotor (9); the retarder rotor (9) is connected with a transmission shaft (13); the inner circle of the retarder stator (5) and the outer circle of the retarder rotor (9) are coaxial; and the retarder coil (8) is an individual coil, is mounted between the two salient poles of the retarder rotor (9), and is fixedly connected with the retarder stator (5). According to the liquid cooling self-excitation type eddy current retarder provided by the invention, the electric energy is saved and the large impact to an automobile storage battery when the retarder is started is avoided by using a self-generating manner; and the coil is sleeved in the middle of a rotor disc by using the individual coil which is wound in a concentrated manner, so that the winding, the installation and the control of the coil can be simplified.

Description

technical field [0001] The invention relates to an electric eddy current retarder, which generates eddy current braking torque through a metal plane or an arc surface to perform auxiliary braking on automobiles, in particular to an automobile retarder with a salient pole structure cooled by circulating liquid, which belongs to automobile manufacturing moving field. Background technique [0002] The eddy current retarder is a kind of auxiliary braking device for automobiles. Its basic principle is: when a metal plane or arc is in motion, an eddy current is induced in its surface to generate a braking torque, and the kinetic energy of the vehicle passes through the magnetic field. The medium is converted into heat energy and consumed, and then plays the role of deceleration and braking. The biggest feature of the eddy current retarder is non-contact braking, which improves the braking performance of the car, avoids the rapid loss of brake pads and tires caused by friction in ...

AI Technical Summary

Problems solved by technology

The heat dissipation efficiency of the air-cooled heat dissipation method is low, and the heat cannot be quickly and effectively dissipated into the air, and heat decay is very easy to occur

Moreover, the current retarder structure contains multiple sets of coils, which makes the retarder structure more complex. In order to ensure a constant gap between the rotor and the stator, the required assembly accuracy is high, the assembly is more troublesome, and the coils have more wires. more complex control

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