Mass Production Roll-off of Mini-Pin Stators

On December 30, 2025, the first batch of 1,000 Mini-Pin flat wire stators rolled off the production line at EZ-DRIVE Technology (as shown in Figure 1). This successfully broke through the key technological difficulties in the manufacturing of Mini-PIN stators, marking an important step for EZ-DRIVE Technology in the field of manufacturing core components of precision motors!

On December 30, 2025, the first batch of 1,000 Mini-Pin flat wire stators rolled off the production line at EZ-DRIVE Technology (as shown in Figure 1). This successfully broke through the key technological difficulties in the manufacturing of Mini-PIN stators, marking an important step for EZ-DRIVE Technology in the field of manufacturing core components of precision motors!

Three-Step Strategic Deployment for Stator Production Lines

EZ-DRIVE Technology provides new energy drive system integration solutions and related products to vehicle manufacturers. It is deeply aware of the impact of the end length of flat wire stators on the integration of electric drive systems. The shorter the end of the flat wire stator, the more benefits can be gained:

█ Saving the amount of raw material copper wire in BOM, reducing costs;

█ Reducing copper loss, making the motor more efficient and improving the overall vehicle range;

█ Making the drive system layout more compact, lighter in weight, and higher in power density.

Therefore, at the beginning of planning the stator production line, EZ-DRIVE Technology firmly proposed a strategic deployment to gradually shorten the end length from Hair-Pin → Mini-Pin → X-Pin. The core difficulty lies in how to avoid the burning of the paint film by welding energy in an extremely short space while ensuring sufficient welding strength to meet the reliability of the welding points.

█ Hair-Pin stator: As a mainstream technology, it occupies nearly 90% of the market share. The mature process chain has laid the foundation for the industry. However, Hair-Pin windings need to retain a straight section at the welding end, which leads to an increase in end height, limiting the further reduction of the motor's axial size and the improvement of power density.

█ Mini-Pin stator: A lean optimized version of Hair-Pin, which shortens the straight section of the end. The production line can obtain considerable benefits such as cost reduction and efficiency improvement with a small improvement cost.

█ X-Pin stator: A disruptive innovation in the flat wire winding structure, which completely eliminates the straight section at the welding end, achieving the ultimate compactness and comprehensive performance improvement.

Taking a certain platform stator product of EZ-DRIVE Technology as an example, the end length of the currently mass-produced Mini-Pin stator is 4mm shorter than that of the Hair-Pin stator. See Figure 2 for a comparison of stator end heights under different winding forms.

Technical Prospects of Mini-Pin Stators

At present, Hair-Pin stators occupy nearly 90% of the market share. EZ-DRIVE Technology is one of the few electric drive system suppliers in the industry that can mass-produce Mini-Pin stators. Its products have the advantages of small size, high power density, excellent system efficiency, and lower product cost, which will further enhance EZ-DRIVE Technology's product competitiveness and improve customer satisfaction.