The grand opening ceremony of Dayang Electric Drive Technology (Chongqing) Co., Ltd. and the global launch of (U+X) PIN stator and rotor were held ceremoniously!

SMM reported on July 17:

In Yubei in July, the scorching sun reflects the fervor of development, and everything lush and green is brimming with infinite vitality. On July 15, the grand opening ceremony of Dayang Electric Drive Technology (Chongqing) Co., Ltd. and the global launch of (U+X) PIN stators and rotors were held here.

The ceremony was attended by a distinguished gathering of guests, including government leaders such as Yang Xiaoyun, Secretary of the Yubei District Party Committee, and Liao Hongjun, Deputy Secretary of the Yubei District Party Committee and District Governor, as well as Lu Chuping, Chairman of Zhongshan Dayang Motor Co., Ltd., Liu Bo, Vice President and General Manager of the BHM Business Unit, Shen Xin, Chairman of the EVBG Business Unit, and Chen Lei, President of the EVBG Business Unit. They gathered at the intelligent factory to jointly witness the milestone moment of the commissioning of Dayang Motor's NEV powertrain project and the launch of (U+X) PIN stators and rotors!

As a global leader in electric drive systems for NEVs, Dayang Motor's decision to establish a presence in Yubei during the height of summer reflects not only its recognition of Chongqing's manufacturing heritage but also its precise grasp of the opportunities in the intelligent connected NEV industry. From signing the agreement in the summer of 2023 to the current commissioning, in just two years, an intelligent factory with an investment exceeding 1 billion yuan has risen from the ground. Behind this "Yubei Speed" lies the collaboration between the government and enterprises, as well as the pulse of industrial revitalization.

(Speech by Xu Bin, Deputy District Governor of Yubei District Government)

Xu Bin, Deputy District Governor of Yubei District Government, said in his speech: "In July, Yubei is abuzz with activity, and everything is thriving. Today, we gather here to jointly witness the commissioning of the project and the launch of the product." He stated that Yubei District closely aligns with the city's "33618" industrial layout, upgrading and creating the "2335" advanced manufacturing industry cluster. The total industrial output value of enterprises above designated size and the regional GDP have led the city for 16 consecutive years and 17 consecutive years, respectively. By seizing the opportunities in the intelligent connected NEV industry and introducing top-tier enterprises such as Dayang Motor, the district's annual NEV production has increased by over 500%, strongly supporting the breakthrough of industrial output value to over 400 billion yuan. "We firmly believe that with the deep involvement of leading enterprises such as Dayang Motor, Yubei's intelligent connected NEV industry ecosystem will become more prosperous, and the industry chain will become more resilient," Xu Bin pledged. Yubei will continue to serve as a top-notch "shopkeeper," providing top-level services, sincere support, and an optimal environment to create a high-quality business environment for enterprises. We also look forward to more related enterprises taking root in Yubei.

(Speech by Shen Xin, Chairman of Dayang Motor's EVBG Business Unit)

In his speech, Shen Xin stated that Chongqing, as an important manufacturing center and transportation hub in the western region, boasts unique geographical advantages, a complete industrial chain ecosystem, and a high-quality business environment. In 2024, the automotive production exceeded 2.54 million units, with NEV production reaching 950,000 units and a YoY increase of 90%. This is precisely why Dayang Motor chose to establish a new production site here—it is not only a crucial step in the group's strategic layout but also a practice in response to the national "dual carbon" goals and to boost the development of the western region's new energy industry.

Shen Xin introduced that Dayang Electric Drive Technology (Chongqing) Co., Ltd. is mainly engaged in the R&D and production of NEV powertrain systems and parts. The commissioning of the Chongqing factory marks a new milestone for Dayang Electric Motor in terms of capacity upgrades and technological breakthroughs in the field of NEV core components, and also completes the industrial layout covering the eastern, central, and western regions of China. In the future, this site will integrate R&D, production, and testing, focusing on the large-scale production of efficient motors and electric control systems, providing more efficient and reliable green power solutions for global customers. The (U+X) PIN stator and rotor products, which made their debut this time, underwent four rounds of development and iteration over three years, with the first mass-produced version rolling off the production line on March 1, 2025, and officially entering production on June 20. "The completion of this intelligent factory will further consolidate our technological leadership and inject strong momentum into the NEV industry chain in Chongqing and even south-west China," Shen Xin said.

Shen Xin expressed special gratitude to the efficient services provided by government departments at all levels in Yubei District, the trust and collaboration of partners, and the dedication and hard work of all employees. He stated that Dayang Electric Motor will always adhere to the philosophy of "innovation-driven, cooperation for mutual benefit," and, with the Chongqing factory as a fulcrum, work hand in hand with all sectors to promote the high-quality development of China's NEV industry.

In addition, the guests attending the ceremony, accompanied by the leaders of Dayang Electric Drive Technology (Chongqing) Co., Ltd., successively visited and conducted field trips to the company's factory buildings, production workshops, and a series of products. Everyone left with a full harvest!

SMM Information & Technology Co., Ltd. (SMM) congratulates Dayang Electric Drive Technology (Chongqing) Co., Ltd. on its grand opening! May it achieve even greater success in the future and contribute to the development of the new energy industry!

Company Profile

Dayang Electric Motor, founded in 1994 and headquartered in Zhongshan City, China, was listed on the Shenzhen Stock Exchange in 2008 (stock code: 002249). It is a national high-tech enterprise, mainly producing consumer electronics motors, NEV powertrains, NEV fuel cells, and other products. It is a global leader in the building ventilation and home appliance motor industry with a leading market share, one of the most popular suppliers of rotating electrical appliances for road and non-road vehicles and a preferred brand in the industry, and an independent supplier of NEV powertrain systems with leading technology and scale in China.

Shanghai Electric Drive Co., Ltd. is a wholly-owned subsidiary of Dayang Electric Motor, a national high-tech enterprise and a specialized and innovative enterprise. It specializes in the R&D and manufacturing of electric drive systems and automotive rotating electrical appliances for NEVs, and owns three sub-brands: Shanghai Electric Drive, Prestolite, and Genorui. It has participated in multiple national key projects and standard-setting initiatives, initiated and relied on industry chain alliances to continuously iterate and launch high-performance products. These products are widely installed in NEVs and traditional internal combustion engine vehicles of numerous brands both domestically and internationally, and are exported to global markets. The company continues to adhere to a customer-centric approach, striving to become an outstanding supplier in the field of green and intelligent solutions for global motors and drive systems!

Dayang Electric Drive Technology (Chongqing) Co., Ltd. is a wholly-owned subsidiary established by Shanghai Electric Drive in Yubei District in July 2023. It covers an area of approximately 95,000 m² with a total investment exceeding 1 billion yuan. It is planned to produce 1 million sets of NEV powertrain systems annually, including manufacturing processes for NEV motors, electronic controls, and powertrain assembly. The Chongqing base will further align with the company's strategic core customers, undertake relevant businesses in south-west China and globally, and respond to customer needs more swiftly.

Introduction to (U+X) PIN Stator and Rotor Products

Dayang Electric Drive Technology (Chongqing) Co., Ltd. introduced the (U+X) PIN stator and rotor at the event venue: Although the specifications of the U+Xpin motor stator and rotor launched on that day are not the highest in the industry, with a speed of only 22,000 rpm and a power of only 200 kW, this motor still redefines a new height in motor technology, marking that China's NEV electric drive system technology has firmly established its position in the global first tier:

1. Firstly, efficiency:

Based on research into material service behavior, the company employs multi-physical domain joint design and intelligent optimization algorithms to achieve a good balance in various technical indicators of the motor.

The company adopts ultra-thin 0.2mm high-performance electrical steel sheets and selective grain boundary diffusion + segmented bonding magnetic steel technology, which has improved operational efficiency by 0.5%.

On this basis, the company has adopted U+Xpin technology. Compared to Npin technology, the copper wire end is shortened by more than 4mm, and compared to Hairpin technology, the copper wire end is shortened by more than 8mm. The motor's volume density is increased by nearly 3%, and efficiency is further improved.

2. Secondly, quietness:

Dayang Motor has accumulated 31 years of motor development and manufacturing technology, and has also accumulated rich experience in NVH performance design. The product launched this time is the culmination of these technologies and experiences. The U+Xpin technology, which shortens the motor winding end, endows the motor with better NVH performance, enabling customers to build NEVs with excellent NVH levels, achieving a better driving experience and customer loyalty.

3. Some of the technological innovations involved in this product:

Even before the construction of this production line, Shanghai Electric Drive had already established 5 Hairpin flat wire stator production lines. The company has been continuously developing and validating the core technologies for X-Pin manufacturing. During the industrialisation process of U+Xpin technology, the company overcame numerous technical challenges. Starting from 2022, it took 3 years of technical breakthroughs and 4 rounds of design and manufacturing plan iterations to successfully complete the development task.

►3.1 Innovation in Flat Wire Stator Production Line Layout

The processes in the flat wire stator production line are highly interrelated. In this regard, the company broke away from the traditional assembly line layout, decoupled the key control relationships in stator manufacturing, and innovatively decomposed the production line into 6 independent work areas. It defined the input and output standards for each work area, set up corresponding automated monitoring systems, and significantly reduced the complexity of production line debugging.

►3.2 Industry-Leading High-Precision PIN Wire Manufacturing Technology

As a core input in the (U+X) Pin process, the company uses laser paint removal and mold forming, minimizing the loss of conductive area. The paint removal time can be as fast as 1.2s per piece, with an average cycle time of 1.7s per Pin wire on a single machine. The straightness of the wire reaches 0.1mm, and the length accuracy is 0.2mm, reaching industry-leading levels.

►3.3 Core Twisting Process Technology

The company uses the industry's first pin-type twisting head equipment, combined with finite element simulation analysis, to precisely control the size and position of the twisting head, with deviations controlled within 0.3mm, achieving advanced industry standards.

►3.4 High-Quality Laser Welding Technology

Welding is a critical success factor for U+X PIN. The company uses dual-ring anti-splatter + DOE parameter experiments to control welding heat, avoiding light leakage and overheating. It employs 2D+3D camera fusion visual detection for visual guidance, adds OCT monitoring during welding to monitor quality in real-time, and uses structured light + multi-model AI training to monitor post-weld quality. The welding pass rate is ≥99%.

►3.5 Intelligent Online Quality Monitoring

In terms of performance detection, this U+X Pin production line extensively applies various automated monitoring methods. For example, in online forming, we use laser and visual sensors to ensure the precision of Pin wires. In the twisting process, the company uses multiple sets of laser sensors and CCD visual inspection to ensure the stability of the equipment and the quality of the delivered products. In the welding process, we use 2D vision, 3D vision, OCT optical monitoring, and large-scale AI models to monitor welding quality. In the BUSbar welding process, the company uses CCD 2D vision-guided welding. In the varnish dripping and coating process, the company achieves 100% PDIV detection and CCD appearance detection for stators.

►3.6 Precise Traceability

All workstations on the production line are equipped with video recording capabilities and the MES traceability system independently developed by Dayang Electric Motor and Shanghai Electric Drive, enabling precise traceability for each workpiece.

Dayang Electric Drive Technology (Chongqing) Co., Ltd. stated that the U+Xpin stator and rotor technology, which made its debut on the same day, will be gradually applied to the company's series of products, allowing global customers to share in the benefits of this technological achievement.

SMM Contact: Cui Fan

Tel:13816522387

Email:fancui@smm.cn