What are the safety issues with lithium carbonate batteries?

Since April 2017, China Chemical and Physical Power Industry Association Power Battery Application Branch and Battery China Network have conducted a large number of field visits and research on domestic lithium battery companies. At that time, the voice of centralized feedback was that the battery recycling industry was too difficult, the recycling cost was too high, and the battery recycling industry almost became a public welfare undertaking. For the problem of power battery ladder utilization, the industry's view is also very sad. The use of the ladder is a face project, and the sound of the "pseudo-proposition" is endless.

However, in less than a year, whether it is battery recycling or ladder utilization, the two major recycling industries are ushered in a big change. With the rise in the price of cobalt and lithium, more and more companies are beginning to plan on the "recycling" layout. In the near future, the actions of Tianyuan New Energy and China Tower are good proof.

Recently, Tianyuan New Energy intends to invest 100 billion yuan to build Guangxi Tianyuan lithium battery materials and lithium battery recycling project settled in Qinzhou Port, Guangxi. The first phase of the project plans to invest 500 million yuan to build a 20,000-ton/year battery-grade lithium carbonate production line and the supporting public works project. The second phase plans to invest 500 million yuan to build a 50,000-ton/year battery-grade trimanganese tetraoxide production line and a 10,000-ton/year power lithium battery recycling unit.

China Iron Tower Corporation and Yinlong New Energy, BYD, Thornton New Energy, Guoxuan Hi-Tech, Waterman and other 16 companies held a signing ceremony for the strategic partnership agreement for the recycling of new energy vehicles. At the same time, the signing of agreements with 16 companies is enough to see the importance of the company's recycling of power batteries. It is understood that the company is mainly engaged in the construction, maintenance, and operation of base station supporting facilities and indoor distribution systems such as communication towers. It is currently the world's largest communication infrastructure service company. As early as 2015, the company started the trial of the battery application. The tower company has built a total of 57 test sites in 9 provinces, and signed a contract with 16 companies at a time, which also shows that the economic benefits of "step use" power cells have been initially recognized by the market.

During the power battery application branch and the battery China network research，Liujinchengjiu, chairman of Yi-Wei Li-Neng, once told Battery China Network that the efficiency of battery recycling depends mainly on the scale of recycling. The increase in production costs brought about by the increase in upstream mine prices will cause more battery companies to think about the issue of resource recycling, so the development of the battery recycling industry is only a matter of time.

Is there a "safety issue" in the power battery energy density of 300 Wh / kg in 2020?

Energy density is something that people in the industry love and hate. Making batteries with high energy density, high cycle times and high safety is the professional ideal of lithium battery practitioners. The country directly links subsidies and energy density. "By 2020, The new lithium-ion power battery unit has a specific energy of more than 300 watt-hours/kg, and the system's specific energy strives to reach 260 watt-hours/kg. It also makes countless lithium battery practitioners frown.

Some experts said that the safety of a high-energy battery is yet to be verified. The higher the specific energy, the greater the safety risk, the more serious the accident, the power battery with an energy density of 300 Wh / kg, and the safety application in new energy vehicles in 2020. Can not be ignored. Judging from the current development of the industry, this practice is open to question. In 2020, can a powerful battery with an energy density of 300 Wh / kg be able to get on the train? What about safety?

The bearers and leaders of the two major scientific research projects of the Ministry of Science and Technology - Lishen Battery and Guoxuan Hi-Tech gave the answer.

In April 2017, the website of the Ministry of Science and Technology revealed that the national key project “High Specific Energy Density Lithium Ion Power Battery Development and Industrialization Technology Research” led by Tianjin Lishen Battery Co., Ltd. has made progress in stages, and the development has been completed. The power battery with a body energy density of 260 Wh / kg is 30% higher than the power battery commonly used in electric vehicles. At the same time, a powerful battery with a monomer energy density of 280 Wh / kg and 300 wh / kg has been developed. sample.

In May 2017, the website of the Ministry of Science and Technology revealed that the project “Development and Integration of High Specific Energy Power lithium ion battery” led by Hefei Guoxuan Gaoke Power Energy Co., Ltd. has made progress. The project research team developed battery cell samples with energy densities of 281 Wh / kg and 302 Wh / kg.

The editor once visited the two companies on the spot. The relevant responsible persons of the two companies have said that the current research project is in full swing and progresses smoothly. It is expected that the relevant technical requirements of the country can be reached in advance.

China Electric Power God Co., Ltd.. Vice Chairman, Tianjin Lishen Battery Co., Ltd. Party Secretary Qinxingcai said, the high specific energy core products of Lishen batteries are supported by corresponding chemical systems, and there are corresponding time plans for product delivery. The products promoted to the market have been strictly inspected and tested, and the safety performance meets the National mandatory requirements.

Conclusion

This is what the editor wants to share with you. As experts have said, the prediction is based on a large number of factual judgments. The lithium industry has made new progress every day under the unremitting efforts of the Chinese people. The details determine success or failure. Only by constantly understanding the latest and most authentic information of the industry, and constantly correcting the direction of their own development, can we have a better grasp of the development of the industry. For the media, for the enterprise, it is the same for the majority of lithium battery practitioners. If you dare to do the "right" thing, you must dare to overthrow the "right" thing. Only in this way can the lithium industry be stronger and the country can strengthen and strengthen.

The page contains the contents of the machine translation.