Key Applications of Servo Precision Presses in the New Energy Vehicle Sector

The application of servo precision presses in the new energy vehicle (NEV) sector is rapidly expanding from general component manufacturing to high-end, sophisticated scenarios, such as core "Three-Electric" systems (battery, motor, and control systems) and hydrogen fuel cells. Their core value lies in utilizing the controllable stamping profiles of servo motors to overcome process bottlenecks faced by traditional presses—specifically regarding deep drawing, ultra-thin sheet forming, and high-precision lamination. The following insights are provided by Jianlong Hydraulic Technology; please feel free to contact us for more information.

1. Key Application Scenarios

1.1 Power Battery Structural Components (Casings and Covers)

This is currently the fastest-growing application area. Battery casings (such as the 46-series large cylindrical cells) feature high depth-to-diameter ratios; traditional presses are prone to causing cracking or wrinkling during the deep-drawing process.

• Process Advantages: Servo presses allow for programmable control of slide speed—enabling slow-speed drawing and high-speed return strokes—which effectively suppresses wrinkles, improves drawing precision, and roughly doubles production speed.

• Equipment Requirements: High-tonnage capabilities and consistent deep-drawing performance are essential; some manufacturers have already launched specialized mass-production solutions for 46-series large cylindrical battery casings.

1.2 Drive Motor Cores (Stator and Rotor Laminations)

Motor cores are formed by stacking hundreds of silicon steel sheets, requiring extremely high precision and consistency for the individual laminations.

• Process Advantages: Servo presses leverage high precision at the bottom dead center (BDC) to ensure dimensional stability for every lamination. Some equipment models can control slide trajectory deviation to within ±0.002 mm, effectively ensuring motor efficiency and NVH (Noise, Vibration, and Harshness) performance.

• Efficiency: When combined with high-speed stamping, production efficiency for stator and rotor laminations can be increased several-fold.

1.3 Hydrogen Fuel Cell Metal Bipolar Plates

This represents one of the applications with the highest technical barriers. Bipolar plates feature intricate flow channels, requiring the precise formation of micro-channels within ultra-thin sheet metal.

• Process Advantages: Success relies on the servo press's ability to control forming depth and its high-rigidity machine structure. For instance, some manufacturers have showcased 160-ton high-rigidity servo presses specifically designed for precision flow-channel forming on ultra-thin sheets. 1.4 Other Precision Structural Components

• Battery Trays/Cover Plates: Produced using direct-drive servo presses, achieving a high output of 1,200 pieces per hour with a yield rate exceeding 99.8%.

• Thermal Management Water-Cooling Plates: Also benefit from the precision advantages of servo presses in thin-sheet forming.

2. Specific Advantages of Precision Servo Presses

Compared to traditional mechanical presses, the advantages of servo presses in new energy vehicle manufacturing include:

2.1 Flexibility and Controllability: Direct servo motor drive allows for real-time adjustment of stamping speed and force based on material characteristics (e.g., high-strength steel, aluminum alloys), enabling "customized" stamping profiles.

2.2 Balancing Precision and Efficiency: They ensure micron-level precision while allowing high-speed operation during non-working strokes and low-speed forming for thick materials, resulting in a multi-fold increase in production capacity.

2.3 Energy Efficiency and Noise Reduction: Compared to traditional mechanical presses, servo presses offer motor energy savings of over 65% and a noise reduction of approximately 10 dB; some models also feature energy recovery capabilities.

As new energy vehicle components evolve toward being lighter, thinner, more precise, and highly integrated, the value of precision servo presses in high-precision, high-efficiency automated stamping lines will continue to grow. Please contact us for further information regarding precision servo presses. Our machines are CE certified and fully compliant with the EU Machinery Directive (2006/42/EC); our products are exported to markets in Europe and the Americas, including Germany, the USA, Mexico, and Portugal. If you have any inquiries or purchasing needs, please scan the WhatsApp QR code below; Jianlong Hydraulic Technology is dedicated to providing you with personalized, customized professional solutions.