How much pressure does 18650 battery pack 12vtechnology development face?

　　The energy density is 300Wh/kg, it can travel more than 500 kilometers on a single charge, and it can be charged quickly in ten minutes... In the early stages of the development of electric vehicles, we are facing various difficulties. (We need to think about) What kind of 18650 battery pack 12vis needed? What kind of electric cars are needed? On November 21, Qi Lu, a professor at Peking University and chairman of the Lithium 18650 battery pack 12vDavos Academic Committee, made a series of enlightening questions at the 6th China Lithium 18650 battery pack 12vNew Energy Industry International Summit Forum (ABEC2018, Lithium 18650 battery pack 12vDavos).

　　In the past two years, my country's electric vehicle industry has developed rapidly. The sales of new energy vehicles have increased from more than 300,000 in 2015 to 777,000 in 2017, and to 860,000 in the first 10 months of this year. The annual sales are expected to exceed 100. 10,000 vehicles mark. With the rapid development of the industry, electric vehicle safety accidents occur frequently. At the Lithium 18650 battery pack 12vDavos, the annual gathering of 18650 battery pack 12vindustry professionals, 18650 battery pack 12vsafety issues have become the focus of attention from all parties. Qilu believes that excessive pursuit of high energy density, high cruising range, fast charging, etc. will only make the safety problems of electric vehicles more and more terrible. As an electric vehicle with basic functions, it has a cruising range of 200-300 kilometers, which can fully meet the needs of daily travel.

　　Technical deviations lead to increased safety risks

　　I saw a report from the China Automotive Industry Center, saying that at least 50 accidents have occurred this year. As long as an accident occurs, no matter which company or brand it is, the entire new energy vehicle industry will be affected, and the lithium 18650 battery pack 12vindustry will also be affected. Liang Rui, vice president of Sunwoda (300207.SZ) Group and president of the power 18650 battery pack 12vsector, said.

　　According to Qilu's statistics, the number of accidents involving electric vehicles is far more than 50. Burns, explosions, and all kinds of accidents, public and undisclosed, number over a hundred every year. While not all accidents are caused by electric vehicle batteries, there are several causes. However, the safety and reliability of batteries have become important factors restricting the development of the electric vehicle industry. Qilu thinks.

　　According to industry insiders, the reason why the lithium 18650 battery pack 12vindustry is going further and further on the road of high energy density and high cruising range is mainly because companies pay too much attention to government subsidies, and the subsidies are related to the influence of vehicle companies. Without government subsidies and relying solely on market initiative, the electric vehicle industry and the lithium 18650 battery pack 12vindustry would not develop at the current rate. This is also the consensus of people in the 18650 battery pack 12vindustry. However, as government subsidies gradually decline, the double-edged sword effect of government subsidies has gradually become apparent.

　　What is the real purpose of our rush to increase energy density? Is it for environmental protection or excessive environmental protection? Is it to save or to save too much? Do we need miles for the sake of mileage or do we over need it? Everything must be done in a certain way. Unscientific cost requirements have also increased safety risks. In recent years, popular practices in the 18650 battery pack 12vindustry such as simplified system design and increased capacity and volume of single cells have increased 18650 battery pack 12vsafety risks. Cheng Jun, director of the Research Institute of Lixin (Jiangsu) Energy Technology Co., Ltd., said.

　　Now all our actions, from operations to production capacity, to the design of electric vehicles, to 18650 battery pack 12venergy density and technology development direction, are all linked to subsidies. It is necessary to keep up with policy developments, but the indicators stipulated in the policy have increased too quickly, which also makes it difficult for companies to cope with the situation and make it difficult to seriously develop products. Liang Rui said in his speech that in terms of cruising range, it was 250 kilometers in 2016, 300 kilometers in 2017, and more than 400 kilometers in 2018. It will be 500 kilometers or even 600 kilometers next year; in terms of energy density, it will be 140Wh in 2018. /kg, in 2019, there are many rumors in the market. Some people say that it will be increased to 180Wh/kg. Regardless of whether the policy is like this, vehicle companies have already started to take action. Many car companies now require it to be above 160Wh.

　　In the past two years, they were driven by policies and vehicle companies. 18650 battery pack 12vcompanies were busy upgrading technology and raising funds to expand production, and did not pay enough attention to safety issues. Now, with the decline of policy subsidies, the market has begun to play a role, and the industry's low period has arrived. , the power 18650 battery pack 12vindustry began to pay more attention to safety issues. From the perspective of industry development, the energy density of power batteries needs to be improved, but energy density is money and safety is life. You cannot give up money at the expense of life! Mao Huanyu, chairman and general manager of Suzhou Yuliang 18650 battery pack 12vCo., Ltd. said.

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