What is manual hydraulic press?

1, manual hydraulic press working principle

(1) Basic structure composition

manual hydraulic press is mainly composed of hydraulic system, pressure cylinder, piston, workbench, mold and operation control system. The hydraulic system is the core component that provides power, usually including hydraulic pumps, fuel tanks, hydraulic valves and other components. The pressure cylinder, in conjunction with the piston, converts the pressure of the hydraulic oil into mechanical pressure, thereby applying pressure to the electrode material placed on the workbench. The table provides a stable support platform for the electrode material, and has good flatness and rigidity to ensure uniform pressure transfer. The mold is customized according to the shape and size of the required electrode, which directly determines the shape and accuracy of the electrode molding. The operation control system is used to control the start, stop, pressure adjustment and other operations of the hydraulic press, so that the operator can flexibly adjust the working parameters according to the actual needs.

(2) Work flow

In actual operation, the electrode material mixed with active substances and other ingredients is first placed in the mold on the work table. Then, the operator starts the hydraulic press, the hydraulic pump begins to work, and the hydraulic oil is extracted from the tank and pressurized to the pressure cylinder. As the pressure of the hydraulic oil in the pressure cylinder rises, the piston gradually moves downward, exerting pressure on the electrode material in the mold. Under pressure, the electrode material is compacted and shaped according to the shape of the mold. When the preset pressure value and pressure holding time are reached, the hydraulic valve controls the pressure release, the piston rises, and the molded electrode can be removed.

2, the role of manual hydraulic press

(1) Precise control of electrode compaction density

The compaction density of the electrode has a profound effect on the performance of lithium battery. The high compaction density may lead to the blockage of the lithium ion transmission channel and reduce the rate performance and cycle life of the battery. However, too low compaction density will make the energy density of the electrode insufficient, affecting the overall capacity of the battery. The manual hydraulic press can control the electrode compaction density within the ideal range by precisely adjusting the pressure.

(2) Adapt to a variety of electrode material characteristics

There are a variety of electrode materials for lithium batteries, including positive electrode materials such as lithium cobaltate, lithium manganate, ternary materials, and negative electrode materials such as graphite and silicon-based materials. These materials have significant differences in physical properties such as hardness, toughness and plasticity. With its adjustable pressure range and flexible operation mode, the manual hydraulic press for lithium battery electrodes can be well adapted to the characteristics of different electrode materials.

(3) Support small-batch production and R&D innovation

In the research and development stage of lithium batteries and in small-batch production scenarios, flexibility and cost control are particularly important. The lithium battery  manual hydraulic press has the advantages of relatively low equipment investment cost, simple operation and easy adjustment.

3, the technical characteristics of lithium battery electrode manual hydraulic press

(1) High-quality mold materials and precision processing technology

The mold is a key part of the  manual hydraulic press to achieve accurate electrode shape molding. Therefore, the choice of mold materials and processing technology is crucial. Usually, high-strength, high-hardness and wear-resistant steel is used as a mold material, such as hot work die steel or cold work die steel, to ensure that the mold does not deform and wear under long-term high pressure. In the mold processing, the use of precision CNC machining technology, such as CNC milling, EDM, etc., to ensure that the dimensional accuracy and shape accuracy of the mold reach a very high level.

4, manual hydraulic press in the lithium battery industry application status and development trend

(1) Application status

At present, manual hydraulic press has a wide range of applications in the lithium battery industry. In many small and medium-sized lithium battery production enterprises, manual hydraulic press is one of the main equipment for electrode preparation, and undertakes a large number of production tasks. The lithium battery products produced by these companies are widely used in the field of consumer electronics, such as mobile phones, tablets, laptops and so on. In large lithium battery production enterprises, although hydraulic presses or other molding equipment with a high degree of automation occupy a dominant position, manual hydraulic presses still play an indispensable role in new product development, small batch customized production and equipment debugging. In addition, in lithium battery research institutions and university laboratories, manual hydraulic presses are essential tools for basic research and innovative experiments, providing powerful equipment support for the frontier exploration of lithium battery technology.

(2) Development trend

As the lithium battery industry continues to develop in the direction of higher energy density, longer cycle life, safer and more reliable, and lower cost, lithium battery electrode manual hydraulic press is also facing new opportunities and challenges, showing a series of development trends. First of all, in terms of accuracy improvement, the future manual hydraulic press will further improve the pressure control accuracy and mold processing accuracy to meet the increasingly stringent requirements of lithium battery electrodes for compaction density and shape accuracy.

5, Conclusion

Manual hydraulic press for lithium battery electrode plays a very important role in the preparation of lithium battery electrode. It lays a solid foundation for the high-quality production of lithium batteries by precisely controlling the electrode compaction density, achieving accurate electrode shape molding, adapting to a variety of electrode material characteristics, helping small batch production and research and development innovation, and ensuring quality monitoring and process optimization.