The empty tank helium leak detection technology can help improve the consistency of lithium battery manufacturing

According to statistics, China's new energy vehicle market developed rapidly in the first quarter. In April, domestic new energy vehicle sales reached 81,904 units, an increase of 11.5% over the same period of last year. The total sales volume of new energy vehicles in January-April reached 225,000 units, a year-on-year increase 149%.

The vigorous development of the new energy industry has also led to the simultaneous improvement of the power battery industry as its core. However, while the power battery is developing at a high speed, how to greatly improve the battery energy density, extend the cruising range, reduce the cost, and promote the popularization and application of electric vehicles under the premise of meeting the safety and life indicators, is still an urgent problem to be solved in the industry.

So, how does lithium battery equipment in the new situation meet the requirements of power batteries? How does the power battery guarantee safety and consistency under the trend of high nickelization? At the "OFweek2018 China power battery Technology and Application Seminar" held on May 21, 2018, the head of the R&D Section of the New Technology Research Institute of Aifa Oriental Vacuum (Chengdu) Co., Ltd. The keynote speech on the application of technology in the power battery industry, together with people in the industry to discuss how the new energy vehicles are booming, how the helium leak detection can promote the consistency of lithium battery manufacturing.

"Power battery airtight detection requires high precision, high reliability, high efficiency, and helium leak detection is the best choice." Qilong Qu believes that the helium molecule is very small, it is easy to penetrate the leak, and there is no helium. Helium is non-toxic, non-flammable, and harmless to humans. And helium, which is an inert gas, doesn't react with anything else, so helium leak detection is the most appropriate solution.

On the other hand, the vacuum box inspection automatically completes the test, and no one is mistaken. The atmosphere contains less radon, only 5PPM, which can meet the needs of high precision leak detection. According to Qi Long, if helium gas recovery system is configured, helium gas is recycled and used to reduce helium gas use.

“Recommended product parts with a qualified rate of 90% or more are recommended to have a detection accuracy of 1E-2Pa.m3/s or more.” According to Qilong Qu, the use of empty box helium leak detection technology can help improve the consistency of lithium battery manufacturing.

The page contains the contents of the machine translation.