Xinnuo high-precision four axis positioning hot press: injecting core equipment energy into Ningde Times' battery research and development

In the wave of accelerated iteration of the global new energy industry, CATL, as a battery industry enterprise, has put forward strict requirements for the accuracy, stability, and functionality of production equipment in its battery research and development process. The launch of the Xinnuo high-precision four axis positioning with displacement monitoring and exhaust automatic hot press machine precisely meets this demand and has become the core equipment to help CATL break through the key link of battery research and development.

From the perspective of technical core, this hot press machine is based on advanced electric hydraulic drive technology, achieving precise control of pressure at the micrometer level. Uniform force is a prerequisite for ensuring battery consistency in key processes such as electrode pressing and cell assembly in battery production. Traditional equipment is prone to uneven electrode density due to pressure fluctuations, which can affect battery capacity and cycle life. However, the Xinnuo hot press can correct pressure deviations in real time through a closed-loop pressure feedback system, ensuring that the pressure error at each pressing point is controlled within a very small range, laying a solid foundation for battery core performance at the equipment level.

The stable temperature control system is another highlight of this device. The forming quality of battery materials and the stability of active substances are extremely sensitive to temperature changes: too low a temperature may lead to loose material bonding, resulting in delamination and detachment problems; If the temperature is too high, it may damage the electrode structure or electrolyte composition, causing safety hazards. The Xinnuo hot press machine has developed a multi-stage temperature control curve to meet the hot pressing process requirements of different battery materials, such as ternary lithium and lithium iron phosphate. It can accurately maintain the target temperature during the hot pressing process, with a deviation controlled within ± 1 ℃. This not only ensures the stability of the process effect, but also directly provides a fundamental guarantee for the high-quality and long-term reliable operation of the battery.

In addition, the device is equipped with a four axis positioning function and displacement monitoring system, which further improves the process accuracy and traceability. In the hot pressing stage of battery assembly, the four axis linkage can achieve precise alignment between the battery cell and the pole ear, avoiding the risk of pole ear virtual welding and short circuit caused by positioning deviation; Real time displacement monitoring can dynamically record the deformation data of materials during the hot pressing process, providing key process parameter feedback for the R&D team of CATL. By analyzing the correlation between displacement changes and battery performance, R&D personnel can quickly optimize the hot pressing process parameters and accelerate the development cycle of new batteries.

At the same time, the automatic exhaust design also solves a major pain point in traditional hot pressing processes. During the hot pressing process of batteries, there may be residual air or volatile gases inside the battery cell. If they cannot be discharged in a timely manner, bubbles may form, causing structural defects inside the battery cell and affecting the energy density and safety of the battery. The Xinnuo hot press machine uses a preset exhaust program to accurately control the timing of pressure release during the hot pressing process, efficiently discharging the internal gas of the battery cell, further improving the battery yield and performance stability.

As the "equipment partner" of CATL's battery research and development, the Xinnuo high-precision four axis positioning automatic hot press not only meets the strict requirements of battery production for accuracy and stability with technological innovation, but also provides data-driven and intelligent process support for the R&D end through functional design such as displacement monitoring and automatic exhaust, helping CATL to maintain its advantages in the iteration of new energy battery technology.