How to recycle waste batteries?

　　Author ：Iflowpower – Portable Power Station Supplier

From the market, the currently used lithium-ion battery is important is an important lithium-ion battery, which can be divided into a lithium manganate-free ion battery, a lithium iron-free battery, a lithium ion battery, a lithium ion battery, a lithium ion battery, a lithium ion battery, a lithium ion battery, a lithium ion battery, a lithium iron ion battery, a lithium ion cell. With regard to different types of lithium-ion batteries, there is a difference in the recovery method. For example, the metal containing the lithium iron ion battery is only lithium, although the value of the lithium is not high, but its cycle performance and stability are better.

It can be used to use the gradient utilization method after sufficient use, and the three-dimensional ion battery contains high value metal such as nickel, cobalt, manganese, but the cycle and safety are poor, not suitable for gradient utilization, but straight Scrap resolution for resource transformation. Based on the decomposition of patent documents, this paper explores the development of waste lithium-ion battery recycling, in order to supply reference for relevant companies. Foreign Breakfast Technical Multi - lithium-ion batteries were born in the 1970s, and they will start commercial use after the 1990s.

Since the early lithium-ion battery is important to use small batteries such as buttons and less usage, the recovery value is low, and the recovery method is similar to other batteries. After physical dismantling, acid and other extraction. Therefore, at this stage, less patent applications related to the recovery of lithium ion batteries, the number of patented applications for the global year is about 20 pieces, and it is important to extract high-value metal with wet metallurgy.

In 2009, with the large number of electric vehicles and electronic products, the use of lithium-ion batteries exhibited dramatic increasing trend, and the number of patent applications related to lithium-ion battery recovery also increased to nearly 100 pieces. Japan's Summour metal, rock metal, Toyota, Belgium, Germany, Merck, South Korea Geological Resources Research Institute, and a number of companies including global important lithium-ion battery markets, including my country, have been involved in lithium-ion battery recycling Research, related patent applications involve the pre-resolution of the waste lithium-ion battery, the separation of the positive material, the extraction of value metal, the electrolyte solution, etc. Different companies' battery recovery technology is different.

Taking Japanese Summourium as an example, as a positive material supplier of Tesla and Toyota automotive battery, the early important important use of high-temperature roasting combined with pulverization, screening and other dry metallurgical methods recovering lithium ion batteries Nickel, cobalt in the electrode. However, since this solution is more energy consumption and is not easy to recover the lithium, aluminum and other metals, Shoumou metals have begun to recover lithium in wet solutions, and the extractants have been studied. In another Japanese company, the rock metal is important to study wet metallurgy.

Efficient separation and recovery of nickel, cobalt, manganese, copper, iron, aluminum, and lithium, etc. in lithium ion battery waste. After 2013, related research of foreign companies is more inclined to improve environmental protection and economics during battery recycling, such as using low toxic or even non-toxic solvents, simplifying recovery processes, and solving the fluorine-containing electrolyte, recovery technology No distinction progression progression.

In the industry, the battery recycling company and the downstream battery use company have been continuously enhanced in battery recycling, such as Shoumou Metal and Toyota, Qikian, BMW, Audi and other international car companies reached a strategic cooperation of battery recycling, so that battery materials are recycled. Closed-loop operation, and foreign companies such as Jimei have also begun to carry out industrial layouts in my country. The patent application of the domestic starting night patent rises in China is submitted in 2001.

In general, it is increasingly increasing year by year, of which my country's total patent application is less, after 2009 The amount of relevant patent application has increased, and the original annual patent application volume has risen to more than 400 pieces, and it is still in a rapid rise. It can be seen that the domestic application for the recovery of lithium-ion batteries is later, but the development trend is basically consistent with foreign countries. Unlike foreign companies, my country's company is based on new energy vehicle power lithium batteries, and the preliminary importance is based on lithium iron phosphate.

The relevant patent layout is important to recycle the waste-free ion battery, and about the dry method Pre-formation of metallurgical, battery discharge and dismantling, etc., and relatively small. It is worth noting that although the total amount of relevant patent applications for domestic companies has a low amount of application, the application of the applicant is low, and the relevant patent application is aggregated in the country, lacks awareness of the international market layout.

As domestic companies pursue environmentally-friendly low-carbon and can continue to develop, the company's recycling research on recycling of lithium-ion battery materials with repeated use value is continuously improved, such as Hefei Guo Xuan high-tech, Greenmei, Bond cycle, Tianqi Lithium, BYD Many domestic companies involve relevant technology research and development. It is worth mentioning that the number of patent applications in the relevant category of colleges and research institutes is more than the company, such as Central South University, the Institute of Process Engineering, Chinese Academy of Sciences, Nankai University, Tsinghua University, etc. Compared with foreign companies, the number of companies and research institutes jointly developed and submitted to the number of patent applications, which reflects the differences in research direction and the shortcomings of cooperation, and the future needs to further enhance the company and research.

Joint technology development. .