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Ultrasonic technology to enhance the performance of lithium batteries

Ultrasonic technology to enhance the performance of lithium batteries
Ultrasonic, one almost made us familiar with ancient technology to turn a blind eye, and was able to bring so many magic effects for the manufacture of lithium-ion batteries and performance improvement. In Mr. Wang Zidong initiated by the director of the National 863 power battery testing center recently held in Hangzhou Power Battery technology Sharon, the the Guangzhou Dong force ultrasonic electronic equipment market manager before Ge President introduced the company's research and applications and promotion work.

Since the late 19th century and early 20th century, people use occurred ultrasonic piezoelectric effect and the inverse piezoelectric effect so that the ultrasonic achieved practical application has been through countless researchers continue to explore and Practice, ultrasound technology has been widely used in medicine, chemistry, biology, all aspects of the military, scientific research and industrial and agricultural production, specific applications include: ranging, velocity, thickness measurement, remote control, imaging, cleaning, inspection, welding, gravel extraction, purification, automatic control, slurry dispersion-induced crystallization, medical diagnostics, cell activation, sterilization, even liquor alcoholization and seeds optimized. But in the lithium-ion battery manufacturing, in addition to the ultrasonic welding and other applications is still barely heard.

According to the the new Guangzhou Dong force before Ge Mr. the Guangzhou Dong force ultrasound Electronic Equipment Co., Ltd. Since its establishment in 1996, has been committed to the research and development of power ultrasonic equipment, production, sales and technical advisory services, ultrasonic metal welding is the The current main business of the company, the product is mainly used in the welding of the pole piece and very ears of the lithium-ion battery, alleged the company's chairman, Mr. Yan Jinxuan the sonochemical Professor, long-term person committed to the research and development of ultrasound applications. In addition, the company with the South China University of Technology, many domestic universities and research institutes of the Chinese Academy of Sciences Guangzhou Institute of Energy and other long-term to carry out the relevant R & D cooperation.

With the rapid development of lithium-ion battery and its performance improvement facing enormous difficulties in the process, the company combined with the the ultrasonic core technology itself to master induced crystallization and herbal extracts and purified mature, active contact with the lithium battery industry chain related businesses carry out targeted applied research cooperation. At present, the company slurry dispersion device has domestic lithium industrial applications, to good effect, can greatly shorten the crystallization time, to reduce the amount of auxiliary materials, improve product consistency, extend cycle life, increase security and improve pole piece of the processing performance, and so on.

Induced crystallization of applications, Ge was introduced, although until now they have not and lithium enterprises (the main target is the the lithium key materials enterprises) industrial cooperation, but their product has matured applications that require the use of ultrasound for ice crystals to generate the first three generations of ice storage project (the case of countries to encourage the development of clean energy-saving new technology). According to reports, the the ultrasound for crystal molded benefits include: shortening the crystallization time to improve grain distribution. Therefore, the possible introduction of ultrasound induced crystallization, including such as lithium carbonate, lithium hexafluorophosphate, lithium iron phosphate, even diaphragm, all involved in the crystallization process of the lithium key materials and its precursor production enterprises. In addition, the company also developed ultrasonic cleaning powder device, the device is capable of efficient and convenient one pole piece of cutting conductive powder and burr clean, high safety lithium products offer great protection.

According to the Engineering lithium understanding, the worldwide introduction of ultrasound technology practical application of the entire lithium industry chain enterprises is indeed rare, new Building force a lot of work is undoubtedly groundbreaking.

Why ultrasonic energy has such a wide range of applications? Original mainly due to ultrasonic cavitation reaction, when the ultrasonic energy is high enough, it will generate ultrasonic cavitation phenomenon, refers to the presence of tiny bubbles in the liquid (cavitation nuclei) in the field of ultrasound vibration, growth and continue to aggregation energy of the sound field, the cavitation bubbles rapidly collapse when the energy reaches a certain threshold, the closed process. Cavitation bubbles life of approximately 0.1s, in sharp collapse can release tremendous amounts of energy, and a speed of about 110m / s Microfluidizer powerful impact collision density up to 1.5kg/cm2 cavitation bubbles local high temperature high pressure (5000K, 1800atm) in the rapid collapse of the moment, the cooling rate of up to 109K / s. ultrasonic cavitation effect greatly enhance the rate of non-homogeneous reaction, to achieve uniform mixing between the non-homogeneous reactants, to accelerate the reaction the diffusion of the reactants and products, and promote the formation of the solid phase, and to control the size and distribution of the particles.

A number of R & D results the company has obtained patent protection, several of which also won the national invention patents, such as the battery electrode paste decentralized painted automated continuous production system and clamp-on ultrasonic processor and its applications. Due process and the specific requirements of various enterprises vary widely, the company hopes to have the opportunity to provide more enterprises the targeted ultrasound assisted the lithium product performance optimization and application systems, lithium business, rapid and healthy for the nation with the the ultrasonic core technology mastered contribute to the development.


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