Author ：Iflowpower – Portable Power Station Supplier
As my country's new energy vehicle promotion continues to rise, discussing the problem of dynamic lithium-ion battery recovery has become necessary and urgent. Liu Shiqiang, senior engineer of the Automotive Experimental Institute of Automotive Technology Research Center, believes that this urgency comes from three aspects: saving resources, protecting the environment, and eliminating safety hazards. Although the mineral resources are rich in mineral resources, there is relatively lack of certain mineral resources, such as cobalt resources, recovering raw materials from waste cells can reduce import dependence on cobalt resources.
In addition, power lithium-ion battery recovery can also prevent heavy metals in the battery from entering the soil contamination environment, or eliminating the safety hazardous dangers of powerful lithium-ion batteries. At present, the industry has agreed that when the power lithium-ion battery capacity fell to 80%, it should be "retired" from the car, and the battery after "retired" is recycled, extending the dynamic lithium-ion battery service cycle, which is conducive to Reduce the entire life cycle cost of the power lithium-ion battery. Based on the above factors, the power lithium ion battery is recovered, and then the dismantling recovery of raw materials is a idea for treating waste power lithium ion batteries.
Is this idea possible? Performance, security, cost, deputy director of the National Key Laboratory of the National Key Laboratory of Sports Control, to think that these points are worthy of attention. Performance and life are directly related to the driving of the power lithium-ion battery, and the effectiveness of the dynamic lithium-ion battery reuse is not resolved, the industry is difficult to develop. Safety-related power lithium-ion battery recovery can develop with a vote, if there is a dangerous accident in this stage, this industry is not going to develop.
In order to solve these problems, Liu Shiqiang believes that the establishment of a monitoring and management system is very important. A perfect evaluation model can be embedded in the battery system, monitor and evaluate the performance of the power lithium ion battery in real time during the use of the power lithium-ion battery. This helps to reduce the cost of secondary evaluation of waste batteries.
Liu Shiqiang, at present, there are three technical routes of dynamic lithium-ion battery dismantling and recycling, dry recycling, wet recycling and biological recovery, these three technical routes have some advantages and disadvantages, the dry recycling process is short, but recycling Nothing; the wet recovery process is complex, the recovery rate of metal elements is high, important for nickel-hydrogen batteries and lithium-ion batteries; biological recovery has a low cost, pollution and reusable use, the technology route just starts , There are multiple technical bottlenecks. At present, foreign companies have formed a high temperature and thermal solution and wet process, have formed certain scale and industrialization. In China, there are already many companies in the layout of dynamic lithium-ion battery recycling business, including Beiqi new energy, BYD, Ningde Times, Guoxuan High-tech, Watma, Swallow Technology, Chaoyi Group, China Aviation Lithium, Bangu, Sand, Greenmei and more.
Zhang Jiagang Tsinghua Institute Re-Manufacturing Industry Research Institute, Zheng Wei, introduced, in order to solve the problem of waste dynamic lithium-ion battery, my country has introduced more than 30 industrial policies, encouraging the dynamic lithium-ion battery ladder, clarifying electric vehicle production The company undertakes an important responsibility for the recycling and utilization of electric vehicles. The rails use the battery production company to undertake the important responsibility for the recycling of batteries. The scrapped car recycling will be responsible for recycling the power battery on the scrapped car.
At present, there are 8 important national standards for the power lithium-ion battery product, concentrated on the performance test requirements and methods of dynamic lithium-ion battery, dynamic lithium-ion battery safety test requirements and methods. The standards for the recycling of power lithium-ion batteries have been published. There are 4 items that have been submitted for approval, and there are 9 subsequent schedules.
It can be seen that, regardless of the perspective of energy-saving and environmental protection or low-power lithium-ion battery costs, the power lithium ion battery recovery work is necessary. At the same time, according to my country's automobile technology research center forecast, 2020, my country's pure electric passenger vehicle (including plug-in) and hybrid passenger passenger car will reach 12-17 million tons, power lithium Ion battery recycling work is also very urgent. At present, the domestic dynamic lithium-ion battery recycling industry has also facing industry standards, monitoring certification lag, industrial coordination, technology needs to be improved, and many recycling systems are not perfected.
Power lithium-ion battery industry will be equipped with the power lithium-ion battery on electric car called "urban mine", how to overcome difficulties, open this "urban mine"? Liu Shiqiang called for cross-industry, multi-field collaboration to form Material to material closed loop copied mode. .
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