Industry Exclusive! HIT’s Magnetic Vision Technology Empowers Lithium Battery Production

In electric vehicle battery manufacturing, high levels of precision control, uniformity, stability, and automation have become necessary conditions in the battery manufacturing process to meet stringent safety and other performance requirements.

 

The first step in battery production is to make positive and negative electrodes. The first step is to produce electrode slurry, which is to mix the active raw materials with solvents, binders, and additives in a mixer.

 

Slurry stirring is a critical process in the lithium battery production process. It mixes the various raw materials in the slurry according to the process requirements and achieves uniform and stable suspension of the active substances in the solvent through high-speed dispersion and low-speed stirring to prepare the slurry. This provides the prerequisite for uniform coating of the active substances in the coating process, facilitates uniform coating, and ensures the consistency of the electrode.

 

The key test parameters of this process include viscosity, density, and solid content, which will directly affect the battery's quality and the electrode's uniformity.

 

One of the lithium battery production processes - homogenate mixing

 

Due to factors such as the viscosity of the slurry and the stability of the equipment, the mixing paddle of the mixer is very easy to deform, causing it to contact the wall of the cylinder, resulting in scratches, causing stainless steel powder to fall into the slurry, leading to quality problems in subsequent products. Traditional detection methods are unable to identify this quality risk. How to prevent and identify the problem of mixing paddle scratches is currently a more urgent research topic.

 

Wuhan Huaweike Intelligent Technology Co., Ltd., based on user needs (non-destructive) and on-site working condition analysis (frequent tank movement and spray cleaning), innovatively applies magnetic vision technology to identify the size of eddy currents formed by cutting magnetic flux lines when the agitator rotates, combined with a unique positioning algorithm to establish a visual, high-precision stirring model; the system is deployed outside the stirring system, there is no physical contact, and the slurry and water film attached to the tank surface do not affect the detection results.

 

HIT's magnetic vision technology

 

This non-contact, real-time online distance measurement system can accurately identify the movement trajectory and trend of the agitator paddle, provide real-time monitoring of the distance between the agitator paddle and the barrel wall, and alarm for abnormal distance to avoid scraping the wall; it forms the industry's only non-destructive agitator pump pitch detection system with a resolution of 0.1mm.

 

Magnetic Visual Mixer Pump Monitoring Product Description

 

At the same time, we also innovatively conduct regular (or continuous) status monitoring and fault diagnosis on the power transmission system of the mixing pump. We combine our self-developed deep learning algorithm to develop vibration and soundprint monitoring, determine the status of the equipment, and form a complete predictive maintenance plan for the mixing pump.

 

Currently, the system has been put into use by a leading company in the lithium battery industry. HIT will continue to assist in the intelligent upgrade of lithium battery front-end processes, reduce costs increase efficiency, and release new quality productivity.

 

For more details, please visit HIT's Magnetic Vision Sensor Products