China Lithium-Ion Battery Industry - Solving security problems

There are many aspects of Li-ion battery safety during his design process, including the structure safe battery, safe raw materials, protective functions and safety certifications. When interviewed by the China Electronics News, Mr. Su Jinran, deputy chief engineer of Tianjin Lishen Battery Co Ltd, said product safety began in product design and selecting the right materials for the electrodes, separators and Electrolytes are the first priority for safe battery design. For battery anode materials, ternary materials, lithium manganese and iron phosphate lithium, which have been widely used in the design battery and yielded satisfactory performance, are safer than traditional lithium cobaltate lithium and nickel.

Su said that at present, the RandD and production of materials, anode, cathode and electrolyte have established sufficient scales in China, capable of satisfying the requirements of design and production of Li-ion batteries. In addition, research on some coating materials security began to be marketed, providing a new look to improve Li-ion battery safety, but China still needs to invest more, and to the Research and Application Development in this area.

A manager of the mobile power of Sanyo Electric Co., Ltd in China, said that when it comes to safety of Li-ion battery, all parts and materials used to make the battery play an important role. They are therefore trying to put together parts and materials to ensure safety in its entirety. In addition, in order to use components and materials, it is important to use advanced technologies of industrial production technologies and quality control when thinking improvement of security. "To further ensure Li-ion battery safety, we need to consider together the batteries and electronic devices that use them. Meanwhile, the issue of security of the battery must be addressed by electronic equipment manufacturers and battery manufacturers together" . the executive said.

Innovation-based standard setting

Because of the complexity in Li-ion battery safety mechanism, in particular the impact on security after re-using the batteries, the process of understanding Li-ion battery safety, and setting its standards must be gradual and progressive . And the development and application of external control techniques should be considered. Suggested that the setting of Li-ion battery safety standards is a highly technical work, setting standards for professionals from battery standardization bodies and technical specialists of the battery industry, users and sectors should participate in the electronic control process, including the works of experimental verification.

Senior engineer from China Electronics Standardization Institute, Mr. Sun Chuanhao, said that Li-ion current can be divided into types of energy and power sources. Since these two products have differences in materials and design structures, their test methods and requirements are dissimilar, even in the same conditions of safety. The so-called portable batteries belong to the type of energy, including lithium-ion batteries used in mobile phones, laptops, digital cameras and camcorders, while the type of battery power for electric tools, electric bicycles and electric vehicles. Sun suggested authorities should introduce separate Li-ion battery safety standards for these two distinct types.

Many industry experts have agreed that setting the standard Li-ion Battery in China should be built on the foundation of independent innovation, but also need to learn and make reference to international standards such as IEC, IEEE and UL.

Li-ion battery for use of the vehicle

Because of its light weight and high energy density, Li-ion battery application fields are expanding in China, and it is hoped that Li-ion battery technology could be widely used in hybrid vehicles and electric vehicles, which could further increase the market Battery Li-ion penetration. Consequently, the development of Li-ion batteries for vehicle use has become a reference point for many Chinese Li-ion battery manufacturers. An analyst from the China Academy of Sciences, Mr. Huang Xuejie, stressed that although China is now the second largest Li-ion manufacturing country only behind Japan, there is still a strong country in this field. Many small batteries in China are still produced manually, resulting in quality of products and fierce price competition varies. Marketing of batteries to power is at an early stage in China, and there is still a gap for Li-ion batteries that could last 15 years, hybrid electric cars, as well as their materials and technologies.

As there are high technical barriers to the production of high-end products such as vehicle use Li-ion battery, the experts call for cooperation between RandD, technology, engineering and management specialists. And in order to improve the technical level of the battery industry in China, the government should also give assistance and to establish mechanisms of dissemination of know-how for the industry .......