About auto power lithium battery resource utilization technology discussed in this paper

Source: 2020 - 04 - 10 hits: through the first car power lithium batteries resource utilization technology discussed with resources and environment problem increasingly prominent, the new energy automobile development is rapid, lithium ion batteries with high specific capacity, high power, long service life, wide range of work, has become the development direction of new energy vehicles power battery. Power lithium-ion batteries were introduced in this paper the structure and working principle of a detailed analysis of the resource value and power lithium battery recycling technology, finally discusses the problems of power battery recycling, and puts forward the specific countermeasures and Suggestions. Energy depletion and environmental pollution has become a society must face and urgent need to solve the problem. New energy cars are more and more countries get development and promotion. In the energy saving of new energy automobile industry development planning ( 2012 - 2020) ', our country also has made a new interpretation to new energy vehicles development planning. As an important part of the new energy automotive industry chain, power battery, especially with the lithium iron phosphate as the anode material of lithium ion battery has been widely used, the number of lithium ion batteries will also have exploded. Although referred to as' green batteries, lithium-ion batteries and conventional lead-acid batteries and nickel-cadmium batteries, contain mercury, cadmium, lead and other toxic and serious pollution of heavy metal elements, they really realize zero emissions, zero pollution, but the positive and negative electrode materials and electrolyte solution and other material has a great impact on the environment. The current domestic power battery research mainly focus on car in improving its safety performance and service life, but in the process of recycling. Therefore, how to recycle the power battery technology exploration has become a problem that nots allow to ignore. Waste lithium ion battery recycling can not only reduce the impact on the environment, also can bring certain economic benefits, is the one of the important link for the development of new energy vehicles industry. The structure and working principle of lithium ion battery power battery is the core of the new energy vehicles, the performance of the development of new energy vehicles plays a vital role. New energy vehicles power battery should have specific energy, specific power, self-discharge less, long service life, good security, etc. Lithium ion battery is a new type of high energy battery development in the 20th century, compared with lead-acid battery, nickel metal hydride batteries has small volume, light quality, high working voltage, Three times the nickel cadmium, nickel metal hydride batteries) , is greater than the energy ( 165 wh/kg, nickel metal hydride, nickel cadmium battery is 2 ~ 3 times) , high energy efficiency, More than 99%) , long cycle life, low self-discharge, no memory effect, no pollution, and good security, has become the development direction of new energy vehicles power battery. Of the structure of the lithium ion battery and lithium ion batteries is mainly composed of battery shell, the positive and negative, of the electrolyte and the diaphragm. Figure 1 is a typical lithium ion battery structure. Battery shell is mostly stainless steel or aluminum alloy shell, according to the shape can be divided into two types, rectangular and circular battery. The anode by the active substances, acetylene black and adhesive evenly coated on the aluminum foil collecting liquid, such as: lithium cobalt oxide, lithium manganese acid, three yuan materials, lithium iron phosphate; Lithium anode carbon material or similar material selection more potential of metal oxides, such as: graphite, graphite carbon materials, such as lithium titanate. The electrolyte is commonly LiPF6, electrolyte electrolyte in the electrolyte by methyl carbonate (commonly DMC) , carbonic acid ethyl ester ( EC) And methyl carbonate ( EMC) A mixture of composition. The film is mainly composed of porous polyolefin.