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

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Han Hua Electric Equipment Union wins first prize in Liaoning Provincial Federation of Trade Unions' rationalization suggestion selection

Release Time:

2022-02-22

  On June 22, a group of 13 leaders, including Inspector Yan Wanda from the Provincial Federation of Trade Unions, Chairman and Standing Committee Member of the Municipal Federation of Trade Unions Zhao Jing, Secretary of Binhai New Area Yang Lin, Deputy Director Yang Xu from the Provincial Federation's Research Office, Deputy Minister Yang Ren from the Provincial Federation's Department of Economics and Technology, Deputy Editor-in-Chief Yang Lihua from the Contemporary Workers Magazine, Vice Chairman Zuo Liya from the Municipal Federation of Trade Unions, Member of the Standing Committee and Head of the Economic Auditing Committee He Yougang from the Municipal Federation of Trade Unions, Section Chief Guan Feng from the Provincial Federation's Department of Economics and Technology, and Chairman Kumamoto from Binhai New Area, visited Han Hua Electric Fitting Company for the provincial top ten rationalization suggestions commendation and high-skilled talent research.
  The commendation mainly focused on the "Provincial Top Ten Rationalization Proposals and Excellent Proposals" selection activity organized by the Provincial Federation of Trade Unions in 2015. Han Hua Electric Fitting Union's entry, "Suggestions on the Rationalization of Electroplating," won first place in Liaoning Province. The Provincial Federation of Trade Unions, the Municipal Federation of Trade Unions, and the Binhai New Area Trade Union each awarded a prize of 10,000 yuan. Inspector Yan Wanda, Chairman and Standing Committee Member Zhao Jing, and Secretary Yang Lin presented the award on-site and commended and encouraged the Han Hua Electric Fitting Company's trade union work.
  In addition, General Manager Ma and the head of the Human Resources department of Han Hua Electric Fitting Company held a research meeting on high-skilled talent with the provincial and municipal federations of trade unions.

 Han Hua Electric Fitting Union wins first prize in Liaoning Provincial Federation of Trade Unions' rationalization suggestion selection

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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