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"Lithium titanate battery outstanding advantages, other batteries do not have high power density, long life, fast charging, can be applied to low temperature and high temperature, safe and reliable, which is determined by its material structure, unlike other lithium Battery, in the fast charge or high temperature environment, will produce SEI film (solid electrolyte interface film, solid electrolyte interface) leaving the battery resistance and temperature rise and combustion; but the shortcomings of lithium titanate battery is low energy density, High cost, so why do I say it (lithium titanate battery) is not the mainstream, is a very good derivative series, "Chinese Academy of Engineering Chen Qingquan said," because (lithium titanate battery) low energy density, high cost, The car may compete but the other. However, Chen Qingquan also stressed that, despite this, but the lithium titanate battery can be used to play its advantages in the occasion, such as the need for fast charge, high temperature and low temperature environment, plus a good business model, coupled with a good infrastructure, There will be a good effect.
In the recently held in Beijing in 2017 international engineering technology development strategy high-end forum - clean energy technology and engineering management (hereinafter referred to as "forum") gap, Chen Qingquan on surging news (www.thepaper.cn) made the above statement. The forum is sponsored by the Chinese Academy of Engineering and Shenhua Group Co., Ltd.
Chen Qingquan is the academician of the Chinese Academy of Engineering, the Royal Academy of Engineering, also known as the "father of Asian electric cars", at the same time, he also served as Zhuhai Yinlong New Energy Co., Ltd. (hereinafter referred to as "Zhuhai Yinlong") chief scientist. The so-called lithium titanate battery, that is, lithium titanate as the anode material of the battery. Lithium titanate battery is also chairman of Gree Electric Dong Mingzhu optimistic and urged, in the acquisition of Zhuhai Group after the failure of silver, but also in personal capacity to participate in the investment in Zhuhai Yinlong. Dong Mingzhu has said, "willing to take all my assets into Yinlong", also known as "investment Yinlong, not because Gree acquired unsuccessful, but because I am optimistic about the silver Long lithium technology."
In fact, the electric car, in addition to vehicle manufacturing, the core technology has three pieces: battery, motor and electronic control, which is the most important of the three inside the battery. Electric vehicles for the power of the battery is basically the energy density and power density is high, the cost is low, fast charging, long life, safe and reliable.
The battery also includes the cathode material, the anode material, the electrolyte, the diaphragm four key materials, each material innovation application may may bring the battery performance promotion. For lithium titanate batteries, Chen Qingquan on the surging news, said lithium titanate is the anode material of the derived system, that is, the negative electrode with lithium titanate to replace the original carbon material. The use of lithium titanate instead of carbon material, the biggest advantage is that fast charging, long life, not afraid of high temperature and low temperature.
Compared with the carbon anode material, lithium titanate material is called "zero strained material", its high stability, with a higher lithium intercalation potential (1.55V), fundamentally eliminating the metal lithium dendrite production, The battery has the risk of internal short circuit. In addition, the reactivity between lithium titanate and the electrolyte is low, and almost no SEI film is formed, and thus has good cycle stability and safety.
However, Chen Qingquan also pointed out that lithium titanate also has the energy density is low, the high cost of high. He stressed that to combine the advantages and disadvantages of lithium carbonate to look at its development, and lithium iron battery must use the right place. Chen Qingquan said that the characteristics of lithium titanate makes it applied to public transport, logistics vehicles and other routes more fixed vehicles have a good advantage. Especially its low temperature charge and discharge performance is good, winter in northeastern China and other low-temperature areas when the advantage is more obvious. Chen Qingquan, for example, said the current Chongqing has used lithium titanate bus proved that the use of lithium titanate battery electric vehicles can be quickly charged, do not need to install so many batteries, so that the car becomes lightweight, but also saves the charging station Equipment and construction costs. Lithium titanate batteries used in the power grid peak regulation and energy storage is also a unique advantage.
In addition, Chen Qingquan also added that lithium titanate is the mainstream, in fact, ultimately depends on the future development, he believes that lithium titanate is very promising.
China as a lack of oil and air pollution is more serious countries, the field of transportation of new energy demand than other countries should be urgent. Chen Qingquan said that based on this background, China has new energy vehicles included in the "second five" national strategic new industry, and the largest global subsidies, which is sufficient to prove that China's emphasis on energy conservation.
For the development of the industry, Chen Qingquan also gives personal advice. He believes that China is such a big country, the need for different types of electric vehicles, affordable and affordable national car, long mileage and luxurious high-end luxury cars, as well as buses, taxis, special vehicles and so on Comprehensive development to meet the needs of different markets, the main direction is electric, lightweight and more intelligent.
Chen Qingquan also stressed that the government subsidies to the electric vehicle industry can promote industrial development, but it is difficult to effectively promote the industry's technological progress and innovation. Need the government on the electric car has a good top-level design, coupled with the enterprise's innovation and management, the industry can take a good road to development. To rely on policy and market dual drive, to do three good, that is, good products, good infrastructure, good business model, through cross-border integration to play a greater efficiency, that is, four network integration, transportation network, energy network, information network , The integration of humanities network.
