One of the purposes of power battery recycling-cascade utilization
With the development of the times and the progress of science and technology, the disadvantages of traditional fuel vehicles are gradually revealed. First, resources are non-renewable. Whether it is diesel or gasoline, it is gone after use. This resource will always run out. Then there is the impact on air quality. Nowadays, all countries attach great importance to environmental pollution. Therefore, the development of new energy vehicles is quite rapid. Over time, there was the problem of -- the cell decay. In fact, one of the purposes of power battery recycling-cascade utilization.
In fact, the power battery decay is very normal, but the problem is that there is no clear policy on how to repair and replace the power battery after decay. Generally speaking, power batteries with attenuation of more than 20% are no longer suitable for new energy vehicles.
When the first batch of new energy vehicles will be in the battery area decay period, it is clear that the power battery recycling has become a turning point in the development of the new energy vehicle industry.
At present, the idea advocated by the state is cascade utilization, which is also an effective way to maximize the value of power batteries. The gradual use of power batteries means that power batteries can be used in other fields, such as providing power support for communication base stations, or powering low-speed new energy vehicles to store energy for less demanding power supply systems.
How to make good use of waste batteries, power battery recycling is of great significance to the ecological environment and resource utilization. In recent years, the downstream demand of new energy industry has increased sharply, and the cost of raw materials transported to the upstream has increased year by year. The lack of nickel and cobalt resources in China has brought great constraints to the development of China's new energy industry. At the same time, my country's insufficient reserves of lithium, cobalt, nickel and other metals are also facing factors such as insufficient ore grade and high mining costs. The main metal resources of my country's power batteries mainly rely on foreign marine imports.
Metal content of power batteries: lithium iron phosphate batteries do not contain rare metals such as cobalt and nickel, but the lithium content is 1.10 percent, which is significantly higher than the lithium grade mined in China (the average grade of lithium ore in China is 0.8-1.4 percent, corresponding to a lithium content of 0.4-0.7 percent). In addition, nickel and cobalt are the core raw materials of battery anode materials. In 2016, China's cobalt reserves were 80000 tons, only 1.1 percent. According to the United States Geological Survey (USGS), the global nickel ore reserves in 2016 were about 78 million tons, while China's nickel ore reserves were 2.5 million tons, accounting for only 3.2 percent.