There are still some questions about the recycling of the power lithium-ion battery.

　　Author ：Iflowpower – Portable Power Station Supplier

New energy vehicle power lithium-ion battery reuse is designed to target ICT categories, home and renewable energy power generation storage capacity. Although the dynamic lithium-ion battery reuse is not carried out in China, in Japan, there have been many years-related experiences in the United States. Japan and South Korea started to focus on the re-use of dynamic lithium-ion batteries from the beginning of the new energy vehicle development, these pre-research work to carry out battery re-use studies in my country.

Today, the domestic automobile power recovery industry has just started. In 2015, the scrap dynamic lithium-ion battery has accumulated 20,000 to 40,000 tons. The corresponding battery recovery rate is only 2%, and the recycling production of the present is fundamentally unexpectedly 120,000 to 170,000 tons of scrap batteries.

Therefore, there are many problems in the construction of recycling management system, advanced technological innovation, mode exploration, standard system construction, etc. I. Tortiethical issues of automobile power lithium-ion battery recycling industry 1) The dismantling process of waste automobile power lithium-ion battery is complex and has safety hazards due to domestic dynamic lithium-ion batteries in size and structural standards, there is no uniform regulation, this chapter Domestic battery manufacturers belong to eight fans, the sea is moving.

The battery system design is completely different makes it impossible to use the same set of dismantlement pipelines suitable for all battery packs and modules, resulting in extreme inconvenience when battery dismantling. If automated disassembly, the battery pack and module in which the shape is different, the shape is different, and there is a high demand for the flexibility of the processing line, resulting in too high cost of disposal costs. It is basically based on manual dismantling.

The skill level of workers affects the efficiency of battery recovery process. At the same time, because the battery pack itself has high energy, short circuit, leakage liquid, etc., thereby causing fire or explosion.

, Leading to casualties and property losses. Therefore, we must study the problem of safety and efficiency during battery pack dismantling process. 2) The product consistency and the remaining life and battery condition cannot be systematically assessing the use of quality tests when re-useing the ladder.

The battery is sorted, including safety assessment, cycle life detection, etc. The core is selected, and then the reorganization can be reused. However, if the power battery does not have a complete data record during the service, the re-use process performs battery life prediction, accuracy may decline, the consistency of the battery cannot be guaranteed, and the cost of detecting equipment, detection, detection time, decomposition modeling.

Newly increased. Due to the internal resistance, electrochemical characteristics, thermal characteristics of different batteries, the inconsistency and reliability of the battery may not be guaranteed. If some problems are not tested during the screening process, they will be used again.

Increase security risks for the entire battery system. So, how to do a fast non-destructive accurate test, is the key to the trapezing utilization. Recently, the state has announced GB / T32690 "Electric Vehicle Remote Service in Management System Technical Plan", regulations include new energy vehicles to run data collection and monitoring into company forced requirements, will make up for this data vacancy after the implementation of implementation.

3) System integration technology is not mature due to the connection between the cells is usually laser welding or other rigid connecting processes, it is difficult to do without loss of dismantling, and the power storage battery step is most reasonable to disassemble the module level, however Batch or even different manufacturers of battery modules must be mixed in the same system, need to consider and process the following system integration techniques: Grouping technology: according to the material system, capacity, internal resistance, remaining cycle life, etc. Re-pair battery module Packet and create a database. The group parameter setting is reasonable.

If the parameter setting range is too large, the module is discrete, and the system has a large system performance and life; if the parameter setting range is too small, the group is too strict, which will result in Matching small modules, system integration difficulties. System Flexible Design: Design system structure to consider the size, weight, and string parallel numbers that may have different modules, so it should be a large elasticity in space, which is both compatible with different modules. Consider fastening and reliability, and consider elasticity and quick loading and unloading.

4) Recycling economically poor automobile power lithium ion battery is not pre-resolved first, including discharge, dismantling, pulverization, sorting. After dismantling, the plastic and metal housing can be recycled, but the cost is high: because the residual voltage is still as high as hundreds of volts (excluding 18650 batteries), there is a danger; the battery housing is in order to be safe, and the package is in the form of non-removal. Open quite feet.

In terms of pre-resolution, it is definitely paying the sale of this sale. Even if the lithium ion battery, the positive material is also a five-flowers, the mainstream is lithium cobaltate, lithium manganese acid, lithium nickel-cobalt-oxanate, lithium iron phosphate, etc. Using a solution of acid-base solution, then the metal oxide is extracted with a variety of chemical procedures.

However, the ingredients of these oxides are different, and the mixture is more difficult. In advance, according to the positive electrode material, the cost is not low. Recycling the positive metal, which is already the most profitable one of the battery recovery lines.

But the program is too complicated, and the company will work, unless the metal price is high in 2011. Today, commodities and non-ferrous metals, rare earth products are in low valleys, using these methods to recycle metal fairly or not, the troublesome troubleshooting. According to the current technical level, single waste liquid is solved, it is enough to eat poor recycling metal revenue.

The negative electrode material is graphite (silicon battery is just a laboratory scale), which is too cheap, only to discard buried solve. Fortunately, the graphite itself does not pollute the environment, only the space is occupied. Under the current technical conditions, no company will take the initiative to invest in the recycling industry.

Summary: The domestic power storage battery has a wide variety, battery structure is complex and there is no fixed standard, resulting in complex recycling process, high recovery costs, the company lacks recycling enthusiasm, difficult to form industrial management, and restructuring technical means, plus government lack of supervision and encouragement Policy, power battery recycling is extremely difficult. Second, the development direction of the recycling industry 1. The management system should be further clarified that the award-punishment needs to be significantly used to enhance the comprehensive utilization industry management of new energy vehicles, regulating the industry and market order, the industry and the Information Technology Department.

New energy Traffic Method for Conditional Conditions for Comprehensive Utilization of New Energy Automobile Waste Battle Battery Comprehensive Utilization Industry Conditions. Since this year, the government departments have focused on the research and development of "New Energy Automobile Power Battery Recycling Management Method", the "Method" development, based on the processing of the workman's responsibility extension, based on the full life cycle of the power battery products. "Method" covers product design, processing, sales, recycling, step utilization, regenerative utilization, etc.

Related responsibility. It is also for the preparation of compulsory supervision in the future. Under the premise of environmentally friendly basic national policy, no company dare to speed up the line, even if it is only possible to pay the waste battery in the warehouse, it can also be guarded in the unregulated state Sub-secondary pollution.

2. Urgently need to establish a dynamic lithium-ion battery recycling standard system At present, my country's residual value assessment, health status evaluation, etc. Promote technological innovation and use, attack hard, break through technical difficulties.

For example, in terms of battery dismantling, the flexible configuration is to be subjected to segmentation, and the demolition water line is subjected to different battery packs, and when the dismantling operation flow is developed, the sections and processes of the existing pipeline should be used as much as possible. To improve job efficiency, reduce repetitive investment. At the same time, to completely record the power battery during service, the manufacturer of the ladder can establish the life model of the battery module according to the data.

Now the dynamic lithium-ion battery recycals technical standards, the battery capacity reaches the recovery process, and what extent can enter the next step, and what extent cannot be used again, there is no clear standard to refer to it, this must be established at the government Related specifications and standards. Deep, if the shape size and internal structure of the power electrical module will make a more unified regulatory regulatory specification in the future, it will further reduce the battery costs used by the ladder, and remove the battery. Solution to create possible, have great help to the battery recycling industry.

According to the small news, this regulations are now brewing. I don't know if I will announce and implement it. 3.

Establish a new commercial operation mode, find profit points about power lithium-ion battery recycling, only non-stop research technology, improve metal smelting efficiency and reduce costs, if there is a scale effect, it can stand under the national subsidies and support policies After that, it can still be a big. The ladder of the dynamic lithium-ion battery uses the derivatives, the customer will be in the case of informed, life, reliability, safety, etc., the product promotion will have certain hinders.

In terms of promotion and use of products, we must adequately consider the current status and demands of customers, combined with a variety of business operations, and get their own interests on the basis of adequate helping customers. It can fully learn some successful related experience in other industries, such as installment, time-time lease, profit settlement, managed operation, or even free supply (follow-up service), etc., explore the effective business model of the ladder utilization.

Summary: At present, the operational model of domestic automobile power lithium-ion battery recovery industry is still in the stage of exploration, and now urgently needs government intervention. In the development of policies and establishment of standard systems, leading the company to gradually enter the health development path. It is also necessary to establish an industry alliance together to establish a healthy industrial chain to find a feasible profit point.

Third, learn from Japan related experience until today, Japan has no special regulations for the power lithium-ion battery. However, Japan's environmental protection regulations ("Resource Effective Usage", "Energy Saving Law" and "Recycling Resource Law") clearly, there is no reason to develop a legal lithium-ion battery, and the law itself cannot handle technical issues. The Japanese enterprise started in the new energy car than we have been more than ten years, Toyota's Prius is born in 1997.

According to the Japanese, it is extremely attached importance to garbage recovery (the national waste resolution reaching 100%), and Japan should establish a dynamic lithium-ion battery recycling industry chain within 5 years in the birth of the new energy vehicle, but actually no. Even if there is a Toyota, recover the nickel-hydrogen battery (the power lithium-ion battery for mixing vehicles), which is the same in the unprofitable dilemma. Japan is until 2011 to start recycling nickel-hydrogen battery projects in local locations.

Cooperating with local, Toyota and Summit metal, with the latter world-class high-purity extraction technology, Toyota realizes multiple utilization of nickel in a hybrid vehicle power lithium-ion battery, which can recover 50% of the battery pack; At the same time, Toyota Chemical Engineering and Sumitomo Metal Mine is equipped with special processing lines that are equivalent to 10,000 hybrid vehicle batteries per year; in 2012, Honda has made similar things to Japan's heavy chemical industrial companies. However, Honda recycling projects can recover more than 80% of rare earth metals for making new NiMH batteries. In a few years ago, the nickel recovered in a hybrid vehicle battery can only be used to process stainless steel.

With the development of high-precision nickel extraction and separation technology, the nickel recovered nickel can be used to process new batteries. Toyota has promoted nickel recycling technology to overseas factory. Although the recycling battery is responsible, the Japanese companies also rely on recycling metal (including rare earth elements for Japan) as a recycling industry driving force.

In Europe, Toyota shows a more active attitude, which is related to Europe's more demanding environmental regulations. Toyota announced last year that 100% of the mixed car battery was achieved, with 91% recovery rate. Toyota also extended SNAM (France), the UMICORE Group (Belgium) partnership, and the latter is recovered from the latter.

And Toyota (including Lexus) has sold 850,000 mixed cars in Europe, which has been sold in Europe. At the same time, in order to extend the life of the power lithium-ion battery, the alert resolves the output limit of peak. Toyota also promotes the dynamic lithium-ion battery ladder.

Last year, Toyota will use the Waste Battery of Camry Mixed Power Cars for Bank of Huangshi National Park. Nissan also cooperates with Sumitomo to develop battery systems using electric vehicle hearing, as a secondary energy storage system for solar power, for independent power supply in the night and light inadequate. Sumitomo business and Nissan joint venture established 4Renergy company, with the commercial reuse of electric car EV waste lithium-ion batteries, its company has established five years, has become commercially successful lithium-ion battery recycling company.

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