Green Power, Driving the Future. From large electric vehicles to small smartphones, they all rely on lithium-ion batteries. These batteries are at the heart of many modern technologies, powering our everyday lives.

If had the opportunity to visit a lithium-ion battery raw material production site, you can see how ONGOAL TECH played a significant role in designing and installing the battery electrode slurry production section. Let's explore the various components of this project.

The case project focuses on producing the negative slurry for battery electrodes. ONGOAL TECH's involvement covers three critical system modules: the feeding system, conveying system, and mixing system. These systems work seamlessly together to ensure that raw materials are processed into high-quality coating slurry according to precise process standards.

The control system in place manages the entire process. It records real-time feeding data and stores essential equipment operating parameters. Integration with a Manufacturing Execution System (MES) allows for automatic slurry preparation based on predefined recipes and generates detailed slurry reports. This level of automation provides visibility and transparency in managing all process data on the production line.

In the feeding area, active powder materials are carefully unpacked and fed using big bag unpacking stations equipped with a double-layer sealed bag and an assisting blower. This ensures a smooth and efficient feeding process.

After screening to remove any iron particles, the materials are precisely metered and gravity-fed into a dual planetary mixer. This dual planetary slurry mixer employs specially designed twisted paddles and high-speed dispersion discs to ensure even dispersion and thorough mixing of the materials.

Additive powder materials have their separate feeding area to prevent dust and contamination during the feeding process. The screw feeder system guarantees airtight, leak-free material transfer.

The transmitting tank plays a crucial role in conveying materials accurately to the next stage. Positive pressure dense-phase pneumatic conveying is utilized, significantly minimizing material loss and residue during conveying. The piping system features a double-layer design, utilizing stainless steel and rubber hoses to prevent blockages and residues.

Solvents are handled by a dedicated conveying system, where they undergo filtration to remove impurities before proceeding to the next stage of the process.

The dual planetary slurry mixer, with its 1600L capacity, is where all materials come together. This mixer ensures the rapid and even dispersion of powder and liquid materials, creating a high-viscosity slurry that meets exacting standards.

The entire process is highly automated. Speed adjustments are made based on process parameters to achieve the best slurry production results.

After mixing, the slurry is filtered to remove iron particles and then temporarily stored in a coating tank, ready for the next production phase.

Cleaning within the pipelines is accomplished through a two-step process. First, the tank is cleaned using a solvent injection system and automated mixing. Once cleanliness is confirmed through sampling, the cleaning process is considered complete. Secondly, a pigging system, utilizing solvent or nitrogen, is used to push pigging balls through the pipelines to ensure thorough cleaning. This process is controlled, traceable, and follows FIFO principles for the slurry.

The system's design and operation not only ensure product quality but also ease of cleaning and maintenance.

Currently, this production system has a capacity of 1600L/h, providing substantial support to the fast-growing lithium-ion battery manufacturing sector. As the global power battery industry advances into the 'TWh era,' processes like slurry production are undergoing significant upgrades to meet the industry's ever-evolving demands.

ONGOAL TECH's technical innovations, particularly in dual planetary slurry mixers, high-efficiency slurry systems, and twin-screw slurry mixing systems, have greatly enhanced slurry production efficiency and stability. This, in turn, supports ongoing advancements and innovations in the battery industry. With lithium-ion batteries at the forefront of green energy solutions, these developments are critical for a sustainable and eco-friendly future.