Where does the lithium titanate battery technology come from? What is the development prospect?

　　Gree Group terminated the acquisition of Zhuhai Yinlong, and Gree’s plan to "cross-border car manufacturing" has now come to an end. At the time, Gree’s proposed acquisition of Yinlong was as high as 13 billion yuan. What is it that attracts Gree to such a high price?

　　Gree Group terminated the acquisition of Zhuhai Yinlong, and Gree’s plan to "cross-border car manufacturing" has now come to an end. At the time, Gree’s proposed acquisition of Yinlong was as high as 13 billion yuan. What was it that attracted Gree’s high price? It is reported that Gree’s chairman Dong Mingzhu valued Yinlong’s core competitiveness-lithium titanate. Battery technology.

　　Where does Yinlong's lithium titanate battery technology come from? Can it become the mainstream of the market?

　　In 2010, Yinlong spent more than RMB 300 million to acquire a 53.6% stake in the U.S. Austrian Titanium Nanotechnology Company, and mastered the company’s latest technology in lithium titanate materials; from 2012 to 2013, Yinlong successively acquired Zhuhai Guangtong Automobile, Shijiazhuang Zhongbo Automobile has the qualification to produce complete vehicles.

　　So far, there are only two companies that have lithium titanate materials and achieve power and industrial applications. Zhuhai Yinlong is one of them, and the other is Toshiba of Japan.

　　Lithium titanate batteries are still not considered the mainstream of battery technology. At present, domestic automobile manufacturers use ternary lithium batteries and lithium iron phosphate batteries. Ternary lithium batteries dominate the global market. For example, the Panasonic 18650 battery used by Tesla belongs to the ternary lithium battery. With BYD as the representative, commercial vehicle manufacturers such as Dongfeng and Jianghuai are mostly using iron phosphate at this stage. lithium battery.

　　However, the safety of ternary lithium batteries has been questioned. At the beginning of the year, the Ministry of Industry and Information Technology suspended electric buses using ternary lithium batteries from entering the subsidy catalog, causing many domestic automakers to switch to lithium iron phosphate batteries. However, unofficial information later revealed that the subsidy restrictions on new energy vehicles that use ternary lithium batteries will be relaxed, so who is the mainstream of the battery market in the future is still unknown.

　　Why did lithium titanate batteries fail to become mainstream? Energy density is the main reason.

　　Compared with ternary lithium batteries and lithium iron phosphate batteries, lithium titanate batteries have several advantages: high temperature safety, good low temperature performance, long cycle life, and fast charging. Security is a relatively prominent feature, and this is also a problem that everyone is paying more attention to recently. In the safety comparison of the two mainstream batteries, the lithium iron phosphate battery will be better, but it is still not as good as the lithium titanate battery. Another feature is low temperature performance. Previously, many users have complained that the range of electric vehicles is greatly reduced when the temperature is low. The advantage of lithium titanate batteries in this respect is more obvious. It can be at -50 degrees to 60 degrees. It works normally in a wide temperature range.

　　The disadvantage of lithium titanate batteries is the most concerned issue of car manufacturers and users-energy density. Energy density represents the storage capacity of the battery and directly affects the cruising range of the vehicle. At present, the energy density of lithium titanate batteries is only about 1/2 of that of ternary lithium batteries without further technological improvement. However, Yinlong hopes to increase the energy density of the battery on the premise of the safety of the lithium titanate battery, rather than improving the safety on the basis of high energy density, which is also the technological direction choice for new energy companies.

　　Recently, a piece of information about the latest draft of the 2016 new energy vehicle financial subsidy has been circulated on the Internet. The draft shows that the new energy vehicle subsidy is subsidized according to energy density, and the mileage is used as a necessary indicator. This seems to make Yinlong's lithium titanate battery technology with safety as its core step into an embarrassing situation.