Mixed excitation generator with vacuum pump

Abstract

The invention provides a mixed excitation generator with a vacuum pump and belongs to the technical field of automobile motor electric devices. The mixed excitation generator with a vacuum pump comprises a rotor, a stator, a front end cover, a rear end cover and a vacuum pump; a brushless claw pole type electric excitation rotor, a tangential permanent magnetic rotor and a pump rotor of the vacuum pump are installed on a shaft; the brushless claw pole type electric excitation rotor and the tangential permanent magnetic rotor share the same armature winding; generated magnetic potentials are combined in parallel in a magnetic circuit; a magnetic field generated after the superposition of an electric excitation magnetic filed and a permanent magnetic filed can be adjusted by adjusting the magnitude and direction of the electrifying current of the brushless claw pole type electric excitation rotor, thereby ensuring that the generator can output direct current with stable voltage within a wide rotating speed and loading range; and since the vacuum pump is fixed on the rear end cover of the mixed excitation generator through bolts, the mixed excitation generator achieves the advantages of compact structure, small occupied space and convenient installation, not only can supply power for electric equipment of automobiles, but also can provide vacuum servo energy for a brake system.

Description

technical field [0001] The invention provides a hybrid excitation power generation device with a vacuum pump, which belongs to the technical field of automobile motors and electrical appliances. Background technique [0002] The automobile industry is a symbol of modern industry and a leading industry in the development of the national economy. It plays an indispensable role in all aspects of industrial and agricultural production, transportation, and human production and life. Currently, it provides vacuum booster energy for automobile braking systems. The vacuum pump and the generator are installed independently on the vehicle, which not only occupies space but also increases the cost. The generators generally have the problems of high failure rate, low output power, and failure to meet the requirements of users. For example, the published utility model patent: hybrid excitation automobile alternator, application number: 200720091005.5, consists of claw pole rotor, stator,...

AI Technical Summary

Problems solved by technology

[0002] The automobile industry is a symbol of modern industry and a leading industry in the development of the national economy. It plays an indispensable role in all aspects of industrial and agricultural production, transportation, and human production and life. Currently, it provides vacuum booster energy for automobile braking systems. The vacuum pump and generator are installed independently on the car, which not only occupies space but also increases the cost. The generators generally have the problems of high failure rate, low output power, and failure to meet the requirements of users.

For example, the published utility model patent: hybrid excitation automobile alternator, application number: 200720091005.5, consists of claw pole rotor, stator, front end cover, rear end cover, and electronic controller. On the basis of electric excitation, rare earth permanent magnet excitation is added, and a hybrid excitation structure of electromagnetic + permanent magnet is adopted. The key technology is that the claw pole rotor is equipped with magnetic steel, and the magnetic steel is placed between adjacent claw pole rotors of different polarities. The left and right sides of the magnetic steel are inclined surfaces with a taper of 1:5. This method is to paste the magnetic steel between each pair of electric excitation claw poles. It is required that the gap between each pair of electric excitation claw poles should be uniform, and the assembly accuracy is high. The process is complicated and the cost is high; another example is the published utility model patent: the dual magnetic field generator for automobiles and the voltage regulator used with it, the application number: 200420086799.2, the rotor is equipped with permanent magnet claws and electric excitation claws, and the permanent magnet claws are A claw pole and a claw pole of its adjacent electric excitation claw are a whole or two objects close to each other. The excitation coil of the electric excitation claw is connected to the output terminal of a voltage regulator with a built-in current commutator connect

This patent describes a dual magnetic field generator composed of a permanent magnet rotor with a claw pole structure and an electrically excited rotor with a brushless claw pole structure. The permanent magnet rotor with a claw pole structure passes the axially magnetized permanent magnetic field through the claw poles. Changed to a radial magnetic field with multiple poles, there are many air gaps in the magnetic field, large magnetic flux leakage, and low material utilization, and its performance needs to be further improved

Images