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

EN

Development of starter armature

Release Time:

2023-04-11

   Starter Armature It is a core component of the automobile engine starting system and an important part of automotive electronic technology. From the initial direct start to the current electric start, the development of the starter armature has gone through a long process.

  As early as the beginning of the 20th century, automobile starting used a simple hand-cranking method, then developed into more efficient pneumatic starting, and then into more popular and practical electric starting. The development of the armature part of the electric starter can be traced back to 1903 in the United States. At that time, an engineer named Frank J. Ward invented the electric starter. This electric starter consists of a set of armatures and a permanent magnet control switch.

  From the early to the mid-20th century, the armature part of the starter was still relatively simple. It usually consists of a motor, armature, water pipe, cam drive, etc. In 1948, Germany's Robert Bosch GmbH developed a wound-type starter armature. By the 1980s, the rapid development of electronic technology led to a huge increase in the demand for automotive electrical appliances. Semiconductor components and IGBTs began to be used in starter armatures. After a long development process, modern automobile starters are no longer simply motor parts, but multifunctional high-tech automotive parts.

  The starter armature is not only a key component for starting the automobile engine, but also has multiple functions, such as power generation, charging, emergency starting, external power supply, etc., supporting the intelligent and information development of automobiles. The development of the starter armature has profoundly affected the performance and stability of automobile engines and promoted the substantial development of the automobile industry.

  The vehicle starter is an important component. Its working principle is to generate magnetic force through the armature current to drive the engine to rotate. However, if the starter armature is used improperly, it may cause the vehicle to fail to start or damage the motor. To avoid this, the following precautions for the starter armature should be noted:

  The electrodes of the starter armature should meet the manufacturer's recommended standards. If inappropriate electrodes are used, it may cause armature damage or armature heating, affecting the normal operation of the engine.

  The starter armature should be cleaned and maintained regularly. If dust and dirt accumulate on the armature, it may hinder the current transmission of the armature and affect the vehicle's starting effect.

  The starter armature cannot be idled for a long time. If the starter armature rotates without current, it may cause armature damage, thereby affecting the normal operation of the engine.

  The current load of the starter armature should meet the standard. If the armature is overused, the current to the armature may increase, thereby damaging the armature or causing high armature temperature.

  Overuse or prolonged operation of the starter armature will cause the armature to overheat. If the armature is found to be overheating, stop using it and check whether the armature's current load exceeds the standard range.


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...

< 1...161718...24 >