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

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Dry goods sharing: understand the starter armature in one minute

Release Time:

2023-04-20

   Starter Armature It is one of the crucial components of a car engine, responsible for starting the engine. So, what are its characteristics? First, structurally, the starter armature is usually composed of many windings made of high-conductivity metal materials. This structural design allows the starter armature to efficiently conduct current, enabling the engine to start quickly.

  In addition, according to professionals, another characteristic of the starter armature is its ability to withstand high-temperature and high-current operating environments. At the moment the car engine starts, the armature will withstand currents as high as hundreds of amperes and temperatures of several hundred degrees. Therefore, the armature material must be strong enough to withstand such high temperatures and high currents.

  In addition, the starter armature also features quick start, high efficiency, and low noise, making it an important component for the normal starting of a car engine.

  In short, although its role in the car engine seems insignificant, the starter armature undertakes the important task of starting the engine and has many unique features, providing a guarantee for the smooth operation of the car engine.

  The starter armature is an important component in the car engine system. Its function is to start the car by rotating the crankshaft when the engine starts. What is the technological principle of the starter armature? This will be introduced in detail below.

  The starter armature is composed of several coils of wire, with an iron core wrapped around the coils. The iron core has slots for inserting the rotor gear. The manufacturing process of the starter armature begins with the production of the coils, using copper wire of a specific specification, which is wound onto a mold by a winding machine to form coils of a specific size. Then, the coils are assembled onto the iron core, and the coils are connected to the electrodes by electrode welding. After baking, polishing, and other processing, the manufacturing of the starter armature is finally completed.

  To ensure the quality of the starter armature, it must undergo rigorous testing after manufacturing. The testing methods for the starter armature include electrostatic testing, insulation testing, and electrical performance testing, among other steps. Only after all test results are qualified can it be used in the car engine system.

  When using the starter armature, regular maintenance is necessary. Especially during winter use, due to low temperatures and high humidity, the armature is prone to dampness and aging, so it needs to be regularly disassembled, cleaned, and lubricated. At the same time, it is also necessary to regularly check the wiring to avoid poor contact and disconnection failures.

  Various failures may occur in the starter armature during use, such as short circuits in the armature windings, iron core wear, poor electrode contact, and rotor gear wear. These failures require appropriate handling methods, such as replacing coils, repairing the iron core, cleaning the connectors, and replacing gears.

  In short, the technological principle of the starter armature is to convert the magnetic field into rotational force through the circuit, thereby starting the car engine. During use, regular maintenance is required to prevent failures from affecting the use effect.


Starter armature

09-13

2022

Methods for winding the armature of a DC brushless automotive motor

The method for winding the armature winding of a DC brushless car motor is to leave a section of the cable end free and tie it tightly to the shaft. Hold the car armature with one hand, and wind the coil inductance clockwise with the other hand. Taking a five-slot armature as an example, the first coil is 1-5, the second coil is 2-6, then 3-7..., and so on. The sides of many components are on the next layer. The 5-9 components have one side on the next layer and the other side on the top layer. The sides of many components are on the top layer. In order to ensure the insulation between the top layer and the next layer components, it is advisable to place 0.1-0.15mm thick insulating paper pads in between. When the coil inductance in the slot reaches a certain level, a crossbar is needed to make it reach the bottom of the slot. When winding the coil inductance, the wire should be tightened first. Whether in the slot or the wire connection part, it is necessary to prevent the occurrence of crossed turns to prevent excessive space occupation and short circuit between turns due to partial stress of the wire. After all the windings are wound, the wire ends of the same winding component are bundled together, then the insulation layer of the wire connector is removed, different color waterproof sleeves are used, and they are embedded in the corresponding commutator segments. The important role of the armature in a DC brushless motor: DC motor,

08-22

2022

Design rules for automotive armatures

Automotive armature manufacturers indicate that single-layer windings are not suitable for large-capacity motors, and small-capacity motors should not be double-layered. The magnetic flux density of the motor core should not be too high or too low. When the frequency and thickness of the silicon steel sheet core material are constant, the iron loss depends on the magnetic flux density. If the magnetic flux density is too high, the iron loss increases, and the motor efficiency decreases. The increased heat from the iron core increases the motor temperature, and the increased excitation power increases the motor power factor, so the magnetic flux density of the core should not be too high. Try to avoid excessive saturation of the magnetization curve. If the magnetic density is too low, it will increase the amount of motor material used, increasing the cost. The rotor teeth are narrow, the magnetic density is high, the slot entry wire is large, that is, the automotive armature slots are large. Automotive armature manufacturers indicate that due to poor air conduction, there are many gaps in the slots, affecting the coils and easily damaging the heat dissipation of the insulation material, accelerating the increase in motor temperature. The slot fill factor of the motor slots cannot be too high or too low. Usually, the slot fill factor for low-speed motors is 75% to 85%, which can effectively prevent the enamelled wire from loosening in the slots. The design of the motor rotor slot shape should use parallel trapezoidal recesses as much as possible, and the edges of the recesses should not have sharp corners. Try to use a circular bottom recess, because the circular slot is filled with aluminum, which is easy to injection mold and the stator chip is easy to insert. The coil current density should not be...

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