Specializing in the design and manufacture of automotive motor armatures and stators.

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Detailed explanation of the main function of an automotive armature?

Release Time:

2022-11-01

   Automotive Armature The manufacturer stated, The armature is the part of the motor that contains the coil, and the coil's relative movement to the magnetic field. In a generator, an induced electromotive force is generated in the rotating coil under force, causing it to generate electricity. In a motor, the energized coil rotates in the magnetic field under the action of Ampere's force, causing it to rotate in the magnetic field.

  A part of an alternating current generator or related equipment can be represented in either mechanical or electrical terms. Although distinctly separate, these two sets of terminology are often used interchangeably or include a combination of a mechanical term and an electrical term. This can cause confusion when using composite machines such as brushless AC generators, or when conversing between personnel accustomed to using differently configured machines.

  In most generators, the field magnet is rotating and is part of the rotor, while the armature is stationary and is part of the stator. Motors and generators can be constructed with a stationary armature and rotating magnetic field or a rotating armature and stationary magnetic field. The pole shoes of permanent magnets or electromagnets, and the moving iron part of a solenoid (especially if the latter is used as a switch or relay) can also be called an armature.

  The automotive armature's circuit equipment is simple, low-cost, and easy to operate. The disadvantages are high power loss, low efficiency, and reduced motor output. It plays a key and crucial role in the process of realizing the mutual conversion of mechanical energy and electrical energy. A square-wave self-controlled permanent magnet synchronous motor is used, with a Hall sensor replacing the carbon brush commutator, and the rotor permanent magnet material is neodymium iron boron. To our understanding, its performance has significant advantages compared to general traditional DC motors. Automotive armatures have advantages such as high efficiency, low energy consumption, low noise, long life, high reliability, servo control, stepless frequency conversion speed regulation, etc. Moreover, the brushes are removed, and the direct change is that the brushed motor will not produce sparks during operation, greatly reducing the interference of sparks on radio-controlled radio equipment. In short, an automotive armature generally refers to the part of the motor that requires an external power supply. The armature of a DC motor is the rotor, and the armature of an AC motor is the stator.

  Automotive armatures have no brushes, greatly reducing friction during operation, resulting in smooth operation and much lower noise. This advantage is a huge support for model stability. The advantages of automotive armatures also lie in the fact that wear mainly occurs on the bearings. From a mechanical point of view, brushless motors are almost maintenance-free. Only some dust removal maintenance is needed if necessary. From a mechanical point of view, automotive armatures are almost maintenance-free motors, only requiring some dust prevention maintenance when necessary. Of course, when you use them, you can compare them up and down, and you will know the advantages compared to brushed motors, but nothing is absolute. Brushed motors have excellent low-speed torque performance and high torque characteristics. Automotive armatures are irreplaceable, but in terms of ease of use, with the reduction in the cost of automotive armatures and the development and market competition of brushless technology at home and abroad, its power system is in a stage of rapid development and popularization, which has also greatly promoted the development of model sports.


Automotive armature

02-09

2023

Introduction to the role of the stator and rotor in a brushless motor - collect this information!

The stator and rotor of a brushless motor consist of permanent magnets with a certain number of magnetic poles embedded in or on the surface of the iron core. Most permanent magnets are made of rare-earth permanent magnet materials with high coercivity, such as neodymium, iron, and boron, and high magnetic permeability and magnetic induction density. The rotor magnets are similar to those in brushed motors; both produce a sufficient magnetic field in the air gap of the motor. The difference is that the permanent magnets in brushed motors are mounted on the rotor, while those in brushless DC motors are mounted on the stator. The rotor system structure of brushless DC motors often adopts different surface-mounted magnets, also known as tile magnets, with radially magnetized tile-type permanent magnets bonded to the outer surface of the iron core. Through reasonable design, a square-wave air gap magnetic flux density can be obtained. What is the injection molding process for the stator and rotor of a brushless motor? Metal inserts are placed in the mold, and then BMC plastic is injected and heated to 160 degrees. The power of the motor should be selected according to the power required by the equipment, so that the motor operates under rated load as much as possible. Two points should be noted when selecting: (1) If the motor power is too small, a "small horse pulling a large cart" phenomenon will occur, causing the motor to be overloaded for a long time and damaging it.

01-30

2023

What are the components of a starter motor armature?

The control device of the starter armature includes an electromagnetic switch, a starter relay, and an ignition start switch, etc., among which the electromagnetic switch is made together with the starter armature. I. Electromagnetic switch 1. Structural characteristics of electromagnetic switch The electromagnetic switch is mainly composed of an electromagnetic iron mechanism and a motor switch. The electromagnetic iron mechanism is composed of a fixed iron core, a moving iron core, an attracting coil, and a holding coil. The fixed iron core is fixed, and the movable iron core can move axially in the copper sleeve. The front end of the movable iron core is fixed with a push rod, and the front end of the push rod is provided with a switch contact plate. The rear end of the movable iron core is connected to the fork through an adjusting screw and a connecting pin. The reset spring is arranged outside the copper sleeve to reset the movable parts, such as the movable iron core. 2. Working principle of electromagnetic switch When the directions of the magnetic fluxes generated by energizing the attracting coil and the coil are the same, their electromagnetic attractions overlap each other, and the moving iron core can be attracted to move forward. The pad at the front end of the push rod until the electrical switch contacts are connected to the motor main circuit. When the magnetic pain caused by the energization of the attracting coil and the coil is in the opposite direction, their electromagnetic attractions cancel each other out. Under the action of the reset spring, the movable iron core and other movable parts automatically reset, the pads and contacts are disconnected, and the motor main circuit is disconnected. II. Starting relay

01-10

2023

What is the manufacturing method for the starter armature structure?

The starter armature structure can increase the energization time of the starter and avoid the problem of short circuit caused by the ablation of the copper wire winding after the armature is energized for a long time, thus ensuring the safety of the circuit. The starter armature structure includes an armature shaft, an armature winding, an iron core and a commutator. The armature winding includes an end winding i arranged away from the commutator. The end winding i is provided with a U-shaped portion, and the U-shaped portion is provided with an insulating sleeve. The melting point of the insulating sleeve is higher than 200 ℃. The iron core is fitted on the armature shaft, and the iron core is provided with a winding slot i, and the armature winding is embedded in the winding slot i. An insulating piece i is set in the winding slot i to isolate the armature winding from the iron core and the edges of the components of the armature winding. The insulating piece i has an S-shape structure to wrap the edges of the components of the armature winding. The commutator is fitted on the armature shaft and is arranged near the end of the armature shaft. The commutator is provided with a winding slot ii. The armature winding also includes an end winding ii, which is arranged near the commutator and embedded in the winding slot ii. The end winding ii is composed of an inner ring layer and an outer ring layer, and an insulating element ii is arranged between the inner ring layer and the outer ring layer to isolate the inner ring layer and the outer ring layer. The clamping ring is also fitted at a position corresponding to the winding slot ii on the commutator. The insulating sleeve is made of glass fiber. Compared with the existing technology, this invention

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