August 27, 2018, Shanghai – the world's leading developer of leak detection instrumentation, manufacturer and supplier of Infukang and SCHOTT, a leading multinational high-tech group in the field of specialty glass and glass-ceramics On the occasion of the 2018 Shanghai International Lithium Battery Industry Exhibition, it jointly released its latest new energy vehicle battery sealing improvement solution - Glass-Aluminum Sealing Technology (GTAS) uses glass material as the sealing terminal of the battery electrode, replacing the traditional plastic sealing parts. Thoroughly prevent moisture from penetrating into the battery; combined with InFukang's state-of-the-art gas detection method, it is possible to achieve the highest standards of sealing, thus increasing the battery capacity and life of electric vehicles to a new stage of development.
The picture shows Infukon and SCHOTT jointly held a press conference to release their latest new energy vehicle battery sealing improvement solution.
As a key consumable, the power battery accounts for one-third of the value of electric vehicles. But batteries contain flammable electrolytes that need to maintain capacity throughout their life. Quality control is especially important. Standards for power battery life: 10,000 charge cycles After that, it should maintain more than 80% capacity - which is difficult for everyday electric vehicles and hybrid vehicles. 'To achieve long working life, it is extremely important to prevent electrolyte leakage and moisture and moisture from penetrating into the battery, because electrolysis The liquid may react with water to form hydrofluoric acid. Long-term moisture infiltration may even cause complete damage to the battery. Only modern gas detection methods can ensure this essential sealing. ' Mr. Zhao Fanfei, Sales Director, Yingfukang China Express.
For the manufacturer to inject the electrolyte to complete the package, it is necessary to detect whether the casing leaks. The limit leakage rate range needs to reach extremely low 10-5 to 10-6 mbar·l/s. The traditional water raft detection, leak detection spray or Pressure drop measurement can not be satisfied, Yingkang's vacuum chamber helium detection can be perfectly handled, not only can achieve accurate detection, but also has the advantages of short cycle time and high automation, no operator intervention is required. In the case of the 'pressure method' of placing the battery in a high-pressure helium environment. Mr. Zhou Zhaojian, the manager of the automotive industry in China, added: ' 'The pressure method' is mainly used for batteries with a rigid outer casing. For square cell manufacturing, it is often helpful to check the tightness of the case before the battery is injected into the electrolyte at an early stage. After the injection is completed, only some parts of the battery need to be leak tested. Detectors can provide leaks that can occur when assembling battery modules into battery packs. Infcom can provide sniffer with helium or mixed gas as detection gas and more accurate detection results. Leak detection program. '
The picture shows Yingfukang and SCHOTT exhibiting at the 2018 Shanghai International Lithium Battery Industry Exhibition, showing their innovative products successfully used in the battery and new energy automotive industry.
At the show, Infuk exhibits a number of innovative products that have been successfully used in the battery and new energy automotive industries. Among them, the LDS3000 modular helium leak detector, P3000 squirt, which combines the best compactness and highest precision. The 氦 氦 leak detector, Sentrac hydrogen leak detector and other highlights have attracted much attention.
As we all know, there are some potential weak points in current lithium-ion power batteries. For example, the use of organic polymers as seals for electrode columns is very common in China's power battery industry, as all organic materials (including polymer seals) will follow Time is aging, so it is very likely to affect the battery's tightness. Ye Guohong, Director of Sales and Business Development of Asia, SCHOTT China, said: 'It's like a plastic drying rack on the balcony, it's easy to get rid of it. Our solution The idea is to solve it fundamentally - we have developed a glass-to-metal sealing cover that has been applied to different types of lithium batteries for decades. The use of glass as a metal sealing material is very mature. The new technology introduced this time: glass - Aluminum package (GTAS) technology can effectively eliminate these weak links in the power lithium battery cover.
Mr. Wang Chuan, Sales Director of SCHOTT China further explained: 'These GTAS seals are made of special glass and their composition is finely adjusted to meet the characteristics of aluminum: the thermal expansion coefficients of the two materials work together. Using the principle of compression sealing, The special glass ring is placed on two aluminum or copper electrode posts, and then a larger aluminum ring is placed on the outside. Since the aluminum expands faster than the glass, when the material is cooled again, the aluminum is worn from the outside to the electrode column. The compression of the glass seals ensures a strong mechanical seal. The traditional square battery cover usually consists of up to 11 different components made of plastic, copper and aluminum. In the cover plate, each electrode column contains only a small number of components: the electrode column is made of aluminum or copper, the sealing ring is made of special glass, and the ring is made of aluminum. Therefore, the intelligent, streamlined design can provide reliable for square batteries. Air tightness. The use of GTAS technology on the electrodes and the use of laser fine soldering when the cover and body are joined are two key factors in improving the life of a prismatic battery.
With the great success of electric vehicles, battery material suppliers and battery manufacturers will have more and more sealing requirements. InFukang and SCHOTT are responding to the airtightness of power batteries from these two directions. The challenge is: sensible structural design and advanced leak detection. Mr. Zhao Fanfei concluded: 'The future belongs to electric vehicles. Faced with the new challenges of the times, we will continue to innovate and help the development of China's lithium battery industry, better for constant Expanded new energy vehicle market services. '