Entering 2017, the life of power battery manufacturers is not easy-the price of upstream raw materials has risen, and the subsidy of downstream new energy vehicles has fallen, urging batteries to reduce costs. However, even so, for the power battery industry, a round of new technology and capacity expansion But it is stepping up.

　　Entering 2017, the life of power battery manufacturers is not easy-the price of upstream raw materials has risen, and the subsidy of downstream new energy vehicles has fallen, urging batteries to reduce costs. However, even so, for the power battery industry, a round of new technology and capacity expansion But it is stepping up.

　　In the process of advancing the research and development of high-energy-density batteries, various companies are scrambling to get ahead. Battery companies have increased R&D investment, and news of improving the energy density of cells and battery systems by improving the raw material systems such as positive and negative materials, separators, electrolytes, and optimizing the PACK structure have been one after another. Ningde Times, Guoxuan High-Tech, Tianjin Lishen, BYD, AVIC Lithium Battery, BAK Battery, Thornton New Energy and other leap forwards in battery energy density have frequently attracted the attention of the industry.

　　The increase in energy density is, on the one hand, the inevitable result of the pursuit of longer cruising range in the development of new energy vehicles. On the other hand, it is closely related to the amount of government subsidies. Entering 2017, the new energy vehicle subsidy policy has been adjusted, including the battery energy density as an important reference indicator for subsidies. On March 1 this year, four central ministries and commissions issued the "Action Plan to Promote the Development of the Automotive Power Battery Industry", clearly stating that the improvement of battery specific energy will be one of the key development goals in the future. The energy reaches 260Wh/kg, the cost is reduced to less than 1 yuan/Wh, and the specific energy of the power battery unit reaches 500Wh/kg in 2025.

　　In addition, in order to improve China's power battery research and development level, form a joint research and development force between enterprises, and jointly promote technological progress in the industry, the Ministry of Industry and Information Technology also took the lead in establishing the National Power Battery Innovation Center last year. The goal is that my country's power batteries will catch up with Japan and South Korea by 2020. In the view of Miao Wei, Minister of Industry and Information Technology, “To build a manufacturing innovation center is to make up for the broken links in the innovation chain, especially to solve the so-called "valley of death" from laboratory products to industrialization, and to disperse innovative resources. Unite with the power of innovation."

　　Under a series of incentive measures, the energy density of power batteries has repeatedly broken records. A few days ago, Minister of Science and Technology Wan Gang stated at the 8th Clean Energy Ministerial Conference and the 2nd Ministerial Conference on Innovation Mission that since 2010, when he took the lead in the development of electric vehicles on a large scale, the energy density of electric vehicle batteries will be able to Double the cost and reduce the cost by about 50%.

　　China is striding forward in the forefront of increasing energy density, and various battery technology routes are innovating, such as graphene, lithium-air batteries, supercapacitors, etc., reports from time to time appear in the newspapers.

　　Continuously climbing to new heights of energy density while breaking the key constraint of the range of new energy vehicles, it is also promoting the technological progress of the entire battery industry. However, in this round of competitions, the pure pursuit of high energy density has also raised concerns in the industry-if higher energy density means more subsidies, will the pursuit of energy density neglect battery safety, lifespan, etc. Important indicators.

　　The battery safety and lifespan are not a new topic for a long time. In recent years, new energy vehicle combustion incidents are not uncommon. The service life of power batteries in new energy vehicles is 3-5 years. At the same time, in extreme environments, the attenuation of power battery energy density is a non-linear change, these doubts to some extent dispel consumers' willingness to buy new energy vehicles.

　　A third party has conducted a survey, and more than 90% of ordinary consumers travel within 80 kilometers per day. So does the new energy vehicle as a means of transportation have to pursue high energy density? In addition, the longer the driving range, the higher the price. Comprehensive cost-effectiveness and rational selection of the appropriate driving range will become the mainstream concept.

　　Therefore, only using battery energy density as the only indicator is biased. Other factors such as safety, lifespan, and economy are equally important. This is also an aspect that battery companies must focus on in future research and development.