Nowadays, lithium battery measurement becomes more and more important in the process of lithium battery production products, because in mass production manufacturers if a little error in the product will lead to product scrap, which is why lithium battery testing equipment is widely used in the battery manufacturing industry.
Lithium battery testing equipment in the battery manufacturing industry is widely used in the reasons
Lithium batteries are prone to burn or explode due to short circuit, overcharge, etc., and are dangerous, and are assembled with protection plates in applications as finished batteries; in applications with high energy density requirements, lithium batteries need to be combined in series and parallel to form lithium battery packs, and managed by BMS.
With the frequent occurrence of lithium-ion battery explosions, the importance of lithium-ion battery testing is increasingly prominent. Lithium-ion battery testing items mainly include consistency, functionality, safety, reliability and working condition simulation and other five aspects. The inspection system is divided into battery pack inspection process, including cell sorting, charging and discharging, protection plate, wiring harness, BMS, module EOL (down line tester), battery pack EOL, working condition simulation inspection system, etc. Lithium battery pack testing system is mainly applied to the function and performance testing and evaluation of lithium battery pack in all aspects from R&D, production to engineering application.
Lithium battery testing system is the core part of lithium battery pack automatic assembly production line. With the implementation of "Made in China 2025", the increasing unification of industry standards and the development of automation integration technology, the whole lithium battery production industry will rapidly develop in the direction of intelligence in the future, and all kinds of lithium battery testing system is the key link to realize the intelligent manufacturing of lithium battery production industry.
At this stage, lithium battery testing system is mainly used in 3C products, electric tools, electric bicycles and other fields, the above-mentioned fields are the main body of the downstream market demand. With the rapid development of lithium battery in the application of new energy vehicles and energy storage fields led by electric vehicles, the market demand for lithium batteries is growing rapidly, and the market scale of lithium battery testing system industry is also expanding rapidly.
Common lithium battery testing equipment
A, X-ray lithium battery testing equipment
X-ray lithium battery testing equipment can automatically determine, data storage and identification of defective products, screening isolation, to achieve automatic control of the entire testing process, a good identification of defective products, and do automatic rejection. The product applies to the object and detection of the internal structure of the cylindrical battery lug and the coating of the positive and negative pieces; the negative electrode and the shell wall in the battery (spacing, touching distance, bending state of the lug, etc.).
II. X-RAY online monitoring equipment
X-RAY online monitoring equipment solves the problem that the traditional inspection method wastes a long time in the non-effective X-ray inspection stage such as loading tray, feeding and waiting for the end of battery shaking, thus making it difficult to improve the actual overall inspection capacity and significantly improving the efficiency of inspection.
Third, air-coupled ultrasonic inspection equipment
An important function of this equipment is used for battery sealing detection, such as testing the effect of aluminum plastic film sealing. The seal has defects and folds, which can easily cause liquid leakage. The traditional way of detection is by the naked eye or with calipers. Calipers stuck in the seal, if the thickness is high, there will be a gap, indicating a problem. But this can only be a random inspection, otherwise the whole production efficiency is pulled down. And through air-coupled ultrasonic testing equipment, the sealing effect can be presented online, both comprehensive testing and ensure efficiency.
In general, lithium batteries have higher requirements for product "quality and safety, product consistency, and subsequent maintenance costs", and their product quality needs to be better guaranteed, so the issue of lithium battery testing is particularly important. Automation is an important development direction for the lithium-ion battery manufacturing industry.
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