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

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Precautions for using automotive armatures?

Release Time:

2022-11-05

   Automotive Armature As a new type of energy-saving, CNC integrated motor, it shoulders the important task of revolutionizing the existing motor structure to achieve the goal of more energy-saving and longer-life motor innovation. Below, we will discuss the precautions for using automotive armatures?

  There are also some precautions when using an automotive armature. For example, before disassembly, use compressed air to blow away dust from the surface of the motor and wipe off surface dirt. Choose a suitable location for disassembling the motor and clean the surrounding environment. It is also necessary to be familiar with the structural characteristics and maintenance technical requirements of the automotive armature. Only in this way can the necessary tools and equipment for disassembly be prepared. To further understand the defects in the operation of the automotive armature, if possible, an inspection test can be carried out before disassembly. For this purpose, the automotive armature is placed under load for a trial run, and the temperature, sound, vibration, etc. of each part of the motor are carefully checked, and the voltage, current, and speed are tested. Then, the load is disconnected, and a no-load test is performed separately to measure the no-load current and no-load loss, and records are made. After all these are completed, the power can be cut off, the external wiring of the motor can be removed, and records should be made.

  When using an automotive armature, a megohmmeter with a suitable voltage must be used to test the insulation resistance of the motor. In order to compare the insulation resistance value measured during the last inspection and judge the change trend and insulation state of the automotive armature, the insulation resistance values measured at different temperatures should be converted to the same temperature, generally 75℃. Next, the absorption ratio K needs to be tested. When the absorption ratio is greater than 1.33, it indicates that the automotive armature insulation has never been damp or the degree of dampness is not serious. In order to compare with previous data, the absorption ratio measured at any temperature also needs to be converted to the same temperature. Regularly check whether the sound of the automotive armature during operation is normal. If there is an abnormal sound, the machine must be stopped immediately for inspection, because the most worn part in the entire brushless motor is the bearing part. If there is an abnormal sound, it is very likely that the bearing is worn. If the wear is excessive, the bearing can be replaced and continued to be used. However, if the bearing is not replaced and continued to be used, the friction during the swinging and rotating process will accelerate the wear of other parts of the brushless motor, which will definitely accelerate the wear of the entire automotive armature.

  After the introduction of the above content, we have a further understanding of the precautions for using automotive armatures. We will no longer feel unfamiliar when we see it again, and problems will not occur frequently during use. Okay, that's all for today's content. I believe there will be more exciting knowledge points to come.

 

Automotive armature

01-03

2023

What are the structural hotspots of a starter armature?

The starter armature moves the entire armature through the magnetic force of the magnetic poles, causing the drive gear to mesh with the flywheel gear ring. The armature of the starter is offset from the magnetic pole by a certain distance under the action of the reset spring, and the commutator is relatively long. The starter housing is equipped with an electromagnetic switch. Its magnetizing coil is controlled by the starter switch S. The movable contact is the contact bridge. The upper end of the contact bridge is longer and the lower end is shorter, so the starter circuit can be connected in two stages. The starter has three magnetic field windings. Among them, the main magnetic field winding with fewer turns is made of flat copper bars, and the other two fine wire windings are the series auxiliary magnetic field winding and the parallel auxiliary magnetic field winding (also called the holding coil). The starter one-way clutch generally uses a friction plate clutch. The working process of the starter armature is divided into two stages. The series auxiliary excitation winding mainly works in the first stage, and in the second stage it is almost short-circuited due to being in parallel with the main excitation winding; the parallel auxiliary excitation winding works in both stages, which not only increases the magnetic force attracting the armature, but also limits the no-load speed. (1) Engagement When the starter switch S is turned on, the electromagnet generates suction to attract the contact bridge. However, because the pawl rests against the blank, the contact bridge can only close at the upper end, and the series and parallel auxiliary magnetic field winding circuits are turned on. The current circuit is:

12-21

2022

Starter armature: What is an armature?

The starter armature manufacturer states that motors play a key and crucial role in the process of achieving mutual conversion between mechanical energy and electrical energy. For generators, it is the component that generates electromotive force, such as the rotor in a DC generator and the stator in an AC generator; for motors, it is a component that generates electromagnetic force, such as the rotor in a DC motor. The starter armature manufacturer states that the armature is the relative motion of the coil relative to the magnetic field of the coil-carrying component in the motor. In a generator, an induced electromotive force is generated in a forced rotating coil to generate electricity. In a motor, the energized coil is subjected to Ampere force in the magnetic field, causing it to rotate in the magnetic field. In the mid-19th century, the term "armature" was early used for inductors, i.e., holders of magnets. Part of an alternator or related equipment can be represented by any mechanical or electrical aspect. Although these two sets of terms are clearly separated, they are often used interchangeably, or a combination of mechanical and electrical terms is included. This can cause confusion when using composite motors such as brushless alternators, or when talking to people accustomed to using different configurations of motors. The starter armature manufacturer states that in most generators, the field magnet is rotating and is part of the rotor, while the armature is stationary.

12-12

2022

Starter armature: armature knowledge points

The armature manufacturer states that the armature plays a key and crucial role in the process of converting mechanical energy and electrical energy into each other. For generators, it is the component that generates electromotive force, such as the rotor in a DC generator and the stator in an AC generator; for motors, it is a component that generates electromagnetic force, such as the rotor in a DC motor. The armature is the part of a motor that has coils, and the coils move relative to the magnetic field. In a generator, an induced electromotive force is generated in the forced rotating coil to generate electricity. In a motor, the energized coil is subjected to the Ampere force in the magnetic field, causing it to rotate in the magnetic field. The armature manufacturer states that 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 composed of a stationary armature and a rotating magnetic field or a rotating armature and a stationary magnetic field. The pole shoes and moving iron parts of permanent magnets or electromagnets and solenoids (especially when the latter are used as switches or relays) can also be called armatures. The armature manufacturer states that armatures are divided into two categories: DC armature windings and AC armature windings. They are used in DC motors and AC motors respectively. Including the armature core and the armature winding, the armature winding is the circuit part of the DC motor,

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