Author ：Iflowpower – Portable Power Station Supplier
my country's automobile technology research center predicts that by 2020, my country's automobile power lithium-ion battery accumulated draft will reach 12-17 million tons, and battery recovery has caused more and more attention. In order to strengthen new energy vehicle power storage battery recycling management, regulate the development of industry, promote comprehensive utilization of resources, December 1, the website of the State Ministry of Industry and Information Technology, the Interim Measures for the Administration of New Energy Automobile Power Battery Recycling Management (Draft for Comment), to the society Public comments, this means that the recovery of the power lithium-ion battery will be regulated. However, the recovery of the power lithium-ion battery also faces many problems, there is no way to make the cost of the battery, making the recovery more convenient, less pollution? The answer is.
In recent "2016 my country International Energy Summit", Professor Chen Yongzhen, the Institute of Electrotechnics, published "Research" topic speech based on the new energy storage and lithium-ion battery research based on the recyclable concept, sharing its team related to the research results of new energy storage batteries. The energy storage lithium-ion battery of this new structure not only allows lithium-ion batteries to truly recover, but also reduces the cost of manufacturing cost and use cost, there are many advantages that are not available in traditional lithium-ion batteries, from technological innovation angles For the recovery of the battery or will usher in the dawn. Lithium-ion battery is difficult to have, whether it is a cylindrical lithium-ion battery or a square lithium ion battery, from the internal structure, all lithium ion batteries are bonded electrodes, while the adhesive electrodes give the power lithium ion battery recovery brings Great troublesome.
When the battery is dismantled, only the bonded electrodes can be broken, the crushed aluminum foil, copper foil materials, and CO, Li elements, etc. should be recovered by metallurgy. Chen Yongxi said that such recycling is not only high cost, the pollution is also large, the acid, the treatment of alkali solutions in the recovery process is also a problem.
Second, such a bonding structure also causes the dynamic cycle life of the lithium ion battery to shorten. If the lithium ion battery is used as static energy storage, the battery's cycle life will be very long, but in motion, the use environment will affect the battery life. In addition, with the change in the temperature of the different seasons, the inside of the battery will also spread, shrinkage, etc.
, long-lasting gas contact is high, the battery pole is loose, and the battery cycle life will drop sharply. "So the life of the powered lithium-ion battery and the life of the narrow static energy storage battery (not the same), the test is very good at the laboratory, but in the actual situation, it will be very good, this is different. ", Chen Yongzhen said.
In addition, the power lithium ion battery and the energy storage battery are in series, parallel, requiring the battery to have better consistency. The battery coating thickness is very thin, such as 100 microns, and the accuracy of the equipment is controlled at ¡À 2.0 microns, and an ordinary extruded coating machine is about 300,000 sets, and the equipment investment is 0.
3-0.5 yuan / WH, which leads to Highly lithium-ion battery high manufacturing cost. New energy storage lithium-ion battery is expected to solve these problems of battery recycling for traditional lithium-ion batteries.
Chen Yongzhen's research team is developing a new type of energy storage lithium-ion battery, and they start from the internal structure of lithium-ion batteries, lithium ions The bonding state of the internal electrode of the battery is changed to a slurry state. The above problem is solved: this new type of energy storage lithium-ion battery is recovered, the regeneration is easy, the purity is also high, and after the lack of elements, Renewable; slurry impact, there is no loosening problem, the battery has a longer life; the slurry electrode sheet is 5-10 times the thickness of the conventional adhesive electrode, absolute accuracy is easy to control, the manufacturing cost of the battery is lowered. The novel energy efficiency of the new storage lithium ion battery is high, with the existing lithium ion battery as high as 99%, its energy efficiency is slightly lower than the current lithium-ion battery, but greater than 90%, in addition, the battery Circularity is also very good.
Chen Yongxi said that the low-speed electric vehicle and small energy storage areas are an application market for the new battery. "We don't ask for a product perfect, you can apply in any occasion, this can't be done, find it to do it, you will do it," Chen Yongzhen said. Although the energy density of lead-acid battery is low, there is a short life, there is a large number of commercial electric vehicles and energy storage base stations adopted, because the lithium-ion battery cost is too high.
Reducing battery costs There is no extra more than three aspects: reducing material cost, reducing manufacturing costs and reducing cost costs. Typically, people will reduce material costs to some extent, and the safety performance will decrease by increasing the size of the manufacturing cost by increasing the energy density. Chen Yongyi team changed the internal bonding electrode of the battery to a slurry, allowing the lithium-ion battery to actually recyclable and renewable, and the recovery residual value is greater than 20%.
They don't rely on scale manufacturing to reduce costs, and the process structure also reduces manufacturing costs and recovery costs; the slurry has the characteristics of impact resistance, thereby improving the dynamic life of the battery. This new type of energy storage lithium-ion battery is a new idea to solve the dawn for battery recycling problems. It is reported that the new energy storage battery R & D project begins in 2010, the small test is successful, from April 1, 2016, it has already authorized 19 invention patents, and in further development.
(Article initial source: battery my country, on December 6, 2016, the original text has homophones, this version of the content is based on Professor Chen Yongzhen to organize the speech and pass the school.
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